The only reason I can imagine is just pure vengance. Do you actually think the child is in danger?
What do you think about a woman who would want to separate a 2 year old child from its father?
Too often it is thought the ‘woman is always right, the man is always wrong’. That is a BIG BS. What is wrong with this mother? If what we have been told on this thread is correct, the mother is likely the one who is screwed up and possibly unfit.
Another point - mother is 56, she was 54 when this daughter was born. Quite possibly not a planned conception. This situation could very well make her a mental case.