[nursie]

We have a 3 yo and a 3 month old who we hope to adopt. The 3 yo old has been with us for 15 month (possible termination on mom is in Appeal's court and unknown bdad)and his 3 month old half sib has been with us since birth. There is an alleged bfather coming forward for paternity testing on the 3 month old. He has expressed that his mom i.e. the possible biogma is interested in adopting the baby.
Has anyone had this experience, we are just wondering if the bgma will be favored or if we as a pre-adoptive family who has raised her since birth and has her half sib who we are planning to adopt will be in better position to win the courts? I know birthfamily is important but we are very bonded/attached to this child as she is to us. We are the only family she has ever known.
Any advice or comments welcome.
Thanks.