Not sure if your responding to my comment or previous poster, so I'll respond just in case :)
Friend coped mainly because her dd was with her sister. She said if her dd couldn't be with her, at least she was with the person friend trusted most in the world.
Friend is also very religious, and her church were incredibly supportive.
I think the hardest thing for my friend was realising that if her dd didn't have SN, this never would have happened, as she'd have been able to tell her teacher what happened and the police wouldn't have been involved. Once the police were involved the matter escalated quickly.
It almost seemed like SS were looking for excuses not to return the dd, so they weren't accused of wasting police time. At one point they were even claiming the SN were caused by bad parenting (because the dd is still in nappies, not talking etc) friend had to get dd's paed to confirm her dd had a genetic condition.
Personally, I feel with the amount of hcps involved in the dds care (she has 3 different peads, an ent specialist, optician, dietician etc) that SS should have realised if there were any concerns about my friend it would have been reported before this happened.
As I said though, my friend is very religious so big on forgiveness too, don't think I could be that accepting myself.