Not in the true sense of the word. It makes her a Mother of her Daughter, who she wants to protect.
The thing I really don't understand in all of this, hospitals have to keep records which are public. You know like Births/Deaths. And births have to be recorded. Maternity wards have upteen people working in them. Now I find it hard to believe that she could go in a hospital, not have a child, but her daughter did, and how many people would be aware of it. And hospital records would have to be altered, doctors records altered, how many records would have to altered/falsified? Too many places this little plan could go wrong and too many records exist to prove her Daughter is the true mother. And the source of this story doesn't cite any of these records, does it?