adopting my nieces baby

Hello all. We need help. My niece is pregnant and due to have her baby in February of 2004. She doesn't want to keep the baby. She already has two children that are not with her. She says that she can't take care of herself let alone a baby. She says that since she was supposed to have her tubes tide the last time, this baby must have been sent to us from God. Although we have children from my previous relationships and also my husbands past relationship, we wanted one of our own together. However we haven't been able to conceive, due to my tube blockage. My niece knows that we have been trying and said this baby was meant for us. We just love children but we don't have the funds for all those legal adoption fees. We will even begin with full legal custody, but really want to adopt the baby. We are in Jacksonville, Fl. Can anyone one help us without all of the expensive fees or just give some advice, please. Thanks.