If the adoption is open won’t the birthmother change her mind and want the baby back?
There is no more likelihood of that happening in an open adoption than there is in a closed adoption. In fact, a birthmother who can watch her child grow up in their adoptive family, and be assured the child is happy and healthy, is more likely to reach acceptance in her grieving process, lowering the chances she’ll have a change of heart. And in either case, her ability to legally interfere in any way is prohibited by the State.