I don't believe June and SC's mental health problems were mutually exclusive.
Really need the likes of Allan Schore and David Brodinsky to review the case histories of June and SC
http://en.wikipedia.org/wiki/Allan_Schore
http://www.fmhconsultants.com/about-david/
Anyway its Friday and I feel the pub calling
You need to prove Sheila committed the murders and then killed herself and that she did so as a result of her mental problems inspite of being on her medication. You are hampered by Jeremy's own claims.
There is not one shred of evidence to support his claim that she killed them.
Jeremy claims he received a phone call from his father who said Sheila was going crazy and got a hold of a gun so he wanted Jeremy to come disarm her.
Going crazy means irrationally and erractically running around screaming and being threatening- things of that sort. She supposedly had a gun in her hand as she was causing this commotion. Earlier in the evening she was very docile and calm so her medicine was working. They went to bed so there was no way they could agitate her. What prompted her to become agitated at 3AM while everyone was asleep in spite of being on medication that had been working?
If she did become agitated and make the commotion alleged then she would have woke up the whole house. Similarly firing an unsuppressed weapon would wake up anyone who had not already been awakened by her antics. Was everyone awake? No the boys were shot in a sound sleep.
So the timing for her to have an episode makes no sense at all (a crazy person wakes up and has an episode in the middle of the night with no one doing anything to her while on medication that kept her docile only hours earlier) nor does it accord that she could make a racket without waking up the boys.
Nor does it make sense that she would make a big commotion in her parent's bedroom, wake them up and simply make threats permitting Nevill to run to the kitchen to use the phone. If she were in a crazy rage and wanted to kill them then she would have went into their room and shot them. It makes no sense for her to make a racket and for Nevill to then go downstairs to use the phone.
Nor does it make sense that Nevill would go downstairs, phone Jeremy and ask him to come disarm Sheila. If Nevill felt that threatened by her then there would be a pressing need to disarm her right away. If he could wait 5-10 minutes for Jeremy to arrive then it can't have been that urgent. Why would he need Jeremy at all? He was big enough to disarm her himself. Instead of disarming her you claim he presents a nice stationary target by making a phone call in front of her.
Instead of shooting him right then and there you claim she grabbed the phone, hung it up (he didn't use that opportunity to disarm her) and marched him upstairs to the bedroom to shoot him and his mother together.
That doesn't sound consistent with someone who is in a crazy rage to me. That would be consistent with someone in full control who made the decision to kill them in the bedroom to make it appear they were sleeping and then shot in bed. Why would a crazy person need it to appear they had been shot in bed? Moroever, it that was her intention why would she march in their room, neglect to shoot the immediately and instead make a racket and permit Nevill to get out of bed and go downstairs?
Why didn't she block the door moreover? She marches in, makes a ton of noise and stands far from the door so they can run out if they want? That makes sense?
Why wasn't Nevill scared to run down stairs but marched back up because he was scared?
Nevill's supposed actions make no sense at all nor does any of this accord with a crazy person in a rage.
Removing the bedroom phone in advance also is not consistent with Sheila suddenly becoming agitated in th emiddle of the night. The killer unplug the kichen phone, hid it and replaced it with the bedroom phone. That means the killer decided in advance to kill the parents in their bedroom as they were sleeping. This is not consistent with the claim of someone suddenly going into acrazy rage in the middle of the night.
It gets worse though, there is substantial evidence the scene was staged.
Jerey claims he left a box of bullets and the gun in a particular location before leaving the house. Jeremy claims this box was either full or only missing 2-3 rounds. The bullets were found in that exact location thus Sheila did not move them. This box is where Sheila got the ammo from that she used supposedly. But the box had 30 rounds in it and even if it had been full there should only be 25 rounds in it. If not full then even fewer rounds should be there. This makes it impossible for all the bullets used to have come from this box. Sheila would have to have gone to the closet and taken out 5-8 rounds from the ammo bandolier. Next to this ammo bandolier was the suppressor interestingly. So she supposedly used 17-20 rounds from the box of ammo and went into the closet and got another 5-8 rounds to use for the murders. Why would she get 5-8 rounds when there were still 30 rounds left in the box she had been using? It makes no sense. Nor does it make sense the killer would march downstairs multiple times to reload. A killer aware of the ammo bandolier would have worn it so that reloading could take place immediately without having to run to another room.
Why would the killer take a few rounds from the bandolier just and leave it in the closet? Quite clearly the killer used the bandolier. The box of ammo was placed int he kitchen as a farce. Who placed that box in the kitchen? By his own admission it was Jeremy.
Moreover there is a host of evidence that the suppressor had been used in commission of the murders. The ceiling light was broken by the suppressor, the mantle was scratched by it during the course of the struggle with Nevill and it had back spatter proving it had been attached while Sheila was shot.
The suppressor and ammo bandolier were placed side by side in the closet after the murders.
Jeremy claimed the phone went dead because it was hung up on the other end but in fact it had not been hung up. It was left off the hook the call had been abandoned by Jeremy on the other end. So this conflicts with his claim.
Jeremy pretended his father called him though in fact he dialed his own number, left the phone off the hook so it would keep dialing as he wa sin transit home and answered the other end when he arrived home. He hung up the phone and his end cleared after 1-2 minutes so he could use his phone again. But the phone at WHF remained off the hook because no one was there to hang it up.
He didn't want to arrive back before police so didn't go back and hang it up though in hindsight he could have done so without any difficulty.
But he didn't so a crucial clue revealed how he was able to place the call to himself.
Sheila allegedly fired 25 shots but had no GSR on her clothing or hands. There is no evidence she changed her clothign she was still in her nightgown. She supposedly hugged the rifle and fired it 2 times yet no GSR on her clothing at all let alone hands. Worse yet she supposedly fired the 2nd shot after she was already dead. Aside from the fact nothing can account for her pushing a trigger down before she was already dead, the recoil of the rifle would have made it go up not down so a second shot if it had been possible would have been higher not lower.
Jeremy's own actions after allegedly receiving the call including refusing to go to investigate from outside and not pressing police to go inside but instead lying about his sister's proficiency with guns and all the lies he told under questioning make no sense unless he is the killer.
Then there are Julie's detailed claims that would be difficult to simply make up in such great detail.
There is nothing at all consistent with Sheila going crazy and killing the family and then herself. The evidence leaves no quesiton as to the killer.
You are trying to divert attention formt he murders with talk only about metnal health not the actual course of event the night in question.
Others might let you get away with such but I will not.