I do believe those kids could turn against the adopted family for withholding the truth from them.
Arghhhhhhhhhhhh.....................
How do you know that the adoptive family are withholding the truth?
As has been said already, many times, adoptive parents are trained in the importance of life story work i.e. their child knowing the truth (in an age appropriate way). During the matching process the openness of the adoptive parents to whatever level of contact is planned is assessed.
Like many adoptive parents I bend over backwards to be positive about the birth parents, because my DDs came from them and they are still part of our lives and always will be. I have bent over backwards to arrange contact with extended family, only for DDs to be hurt yet again when extended family cancels at the last minute.
senS
This wasn't a quick process. The adoption took 2 or 3 years to be decided and finalised. The criminal court case - and the new evidence - does not necessarily mean that the family court would make a different decision if it heard the case again today. it would weigh the two different medical opinions and have to decide which is more probable. Plus, if there is any other evidence (which none of us know), that would also be considered.
There is pressure to make decisions within the child's timeframe - that is, to recognise that a month can be a huge period of time in a child's development. That children cannot be kept in storage while the adults go backwards and forwards determining what exactly happened. In other words, there is a trade off between a child's need for protection with a child's need to stay with biological family where possible and with a child's need for stability and permanence.
There have been cases where a child's need for continuity has outweighed biological factors. If anyone wants them I'll track down the law reports. In one case a foster parent was given permission to adopt when the LA wanted the child to go to an aunt. The children had been with the foster mother for a couple of years, and the aunt was a stranger to them. The foster mother was open to contact with the aunt.
In another case the father had murdered the mother and was in prison on a life sentence. The mother's family lived overseas, the father's in the UK. The father's parents were appalled by what their son had done (he still denied it). Usually the child would not be placed with the perpetrator's family, but the judge decided that - given existing relationships, language and culture of the child - there would be less trauma if the child went to the father's parents. Both sets of grandparents spoke the same language and were willing to work together so the child could have a relationship with his mother's family - including Skype and visits.