I see nothing at all to support your extraordinary view. Neither did the justice system. The pair are/were the most horrible sounding people. The child was treated appalllingly.
Of course criminals who want to get away with murder are going to lie and try to frame other people That's what criminals do.
"Guilhermino da Encarnação: "This is extremely difficult because, in 30 years of criminal investigation, I've never seen the confession of such a serious crime without the arguidos saying they were tortured, attacked or raped so that this, for us police officers, and I tell you, unfortunately, it has become the norm, natural. Therefore I don't give it a lot of credence."
Kate McCann chose to bring up this case in her book, in order to cast doubt on Amaral, She should have looked a bit more closely at the behaviour of the murdered child's mother and the way this child was neglected.
It says a great deal about the McCann's lack of integrity, among other things, that they tried to use this case as a way of discrediting Amaral. A great deal.
There is not a single thing I have read about the case that leads me to a conclusion that there has been a miscarriage of justice.
Joana Pictures1)
http://www.mccannfiles.com/sitebuildercontent/sitebuilderpictures/joanacipriano101.jpg 
Joana at school. Beautifully presented and slim but not at all underweight imo. This photo no longer shows for some reason, but below is poor quality version. Have had to really search the internet for this. Before it was easy to find. Same with some other of the photos.
http://www.exposay.com/celebrity-photos/joana-cipriano-joana-cipriano-eight-year-old-portuguese-girl-missing-since-september-12-2004-file-photos-069wCn.jpg
2)
http://www.mccannfiles.com/sitebuildercontent/sitebuilderpictures/joanacipriano2.jpg
Joana in ?dressing gown? Looking very plump and happy, at home, I think
3)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/.pond/websiteJoana.1.jpg.w560h560.jpg
At a cafe with Leonor and Leandro. Looking happy enough.
5)
http://4.bp.blogspot.com/_0PRT7WgBWRI/TNCBrxOmg1I/AAAAAAAAABE/S-iPU7aKDls/s400/Image+4+Joana+Cipriano+(514+x+600).jpg.jpg)
Cropped version of same photo as above . Joana on her own in cafe. Nicely dressed, plump and looking happy enough.
6)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/.pond/websiteJoana.3.jpg.w560h560.jpg
Joana looking very happy at her baby siblings (?sisters) first birthday with sister and Leandro and birthday cake, at home
They are not paupers or malnourished in any way. Nor lacking in love and attention. Happy kids, both nicely dressed with an attentive and proud daddy.
See the healthy salad in the foreground?
7)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/JoanaCipriano.home.jpg
Enlargement of above just showing a really happy Joana , at home with birthday cake.
8)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/.pond/websiteJoana.4.jpg.w560h373.jpg
A happy Joana with friends or family and ?younger siblings? at ?home?
9)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/.pond/websiteJoana.5.jpg.w560h373.jpghttp://marcosaragaocorreia.fatcow.com/sitebuildercontent/sitebuilderpictures/JoanaCipriano.5.jpg
Enlargement of previous photo. Joana looks well fed and very happy
10)
http://i.prphotos.com/t/3063/SPX-013063/Joana-Cipriano-Joana-Cipriano,-Eight-Year-Old-Portuguese-Girl,-Missing-Since-September-12,-2004---File-Photos.jpg
PJ photo of Joana with face screwed up. Marcos Aragao Correira was annoyed that the PJ chose than one to show Joana ; he felt they deliberately chose the plainest of all the photos.
12)
http://i.prphotos.com/i/SPX-013074/Joana-Cipriano-Joana-Cipriano,-Eight-Year-Old-Portuguese-Girl,-Missing-Since-September-12,-2004---File-Photos.jpg
13)
http://www.asmeninasquevieramdasestrelas.com/sitebuildercontent/sitebuilderpictures/.pond/Jornal24horas11Maio2009p5.jpg.w560h771.jpg
Leonor on bed with toddler and Joanas picture. Room simple but clean. Mother and little one dressed fine. Little one looks healthy and content
Cipriano/Silva Home 1)
http://i.prphotos.com/t/3076/SPX-013076/Joana-Ciprianos-Home-Joana-Cipriano,-Eight-Year-Old-Portuguese-Girl,-Missing-Since-September-12,-2004---File-Photos.jpg
Joana Ciprianos home. Outside view
2)
http://i.prphotos.com/mas_assets/prphotos/images/recent-thumb.png
Cipriano/Silva Home. Kitchen. Neat, tidy and clean
Oh, I see this last photo showing a tidy, clean, immaculate (if simple) kitchen /living room has been struck by the phantom image destroyer... YET AGAIN !
The Phantom image destroyer seems to get rid of any evidence that proves the disgusting disinformation propaganda put about is lies.
But sufficient peeps on here and elsewhere have seen the kichen/ sitting room to know how claen, tidy and well kept it was.
Yeah, it really looks as tho
The child was treated appalllingly. Wrong again j.rob. You have been taken for a sucker like loads of people. Give up if you cant get it right. It is not fair to keep propagating lies and myths.
I have videos and more images if you need further convincing that Joana was well fed, and very happy. She deeply loved her Mum and family.
What evil propaganda has been put about ... and how powerful it has proved.
You are adding to it.