If Amy Tierney was defamed then it is up to her to seek a resolution.
It is interesting though that while condemning the actions of Brenda you have yet to condemn the actions of your fellow supporter.
I would add an s onto supporter making it supporters Faithlilly although, I don't believe the one person who made that block of threatening posts was a McCann supporter just a real troll, unlike Brenda Leyland.
I have seen the text of tweets posted by a couple of supporters regarding Brenda Leyland and their glee at finding her and her sons boxer dog so knew who she was. They had clearly been looking for her for a while IMO. From my reading this looked like a concerted effort to name and shame so to speak, as many sceptics as possible without caring who they were or what they had posted.
Robittybob, Amy Tierney was a member of the Ocean Club staff and I think Brenda Leyland amongst others mistakenly thought that a poster on twitter was her.