Things are looking up

Elizabeth moved into her new place yesterday. It's a furnished efficiency, and her rent includes all utilities, and it's very close to public transportation. The rent is a little less than we originally estimated, so we're very happy about that. She had some trouble finding a place, because her credit is not good, and although we are the ones ultimately responsible for supporting her right now, we are not legally responsible for her, so her name is the only one on the lease. Finally after the attorney explained the situation to the landlord, she was approved for this place.
After she was all settled in, the attorney told her that all of the good things that happened yesterday were thanks to the adoptive parents, who are doing these things with hopes of her going through the adoption. She told our attorney to pass along a message to us that we can be "100 percent sure she will." She went on to tell her that she is not able to care for a child, and cited an example from her past.
It made me feel a little better, even though I know the birth mother has all of the rights (not us) and that she can change her mind up until she signs those papers 48 hours after she gives birth. I feel bad for that final decision she has ahead of her, even though we want this baby so badly. My attorney has told us not to worry, and has said that "Elizabeth doesn't have a maternal bone in her body." I don't understand why she keeps getting pregnant. I don't know if it's that she has a made a living out of giving up babies for adoption (this is her third time doing this) or if it's because she is very poor and Catholic, meaning she doesn't believe in birth control or abortion, and doesn't have the financial means to take care of a child. I am trying to think the best of her, as I hope (and am trying to believe) that she is the woman carrying our baby for us.