Just found out my niece is in foster care.

Hello everyone, it seems I have stumbled on exactly the people I need to speak with! Yesterday (Sunday) it was brought to my attention that my sister has a daughter, and that daughter is and has been in foster care since she was born -- FIFTEEN MONTHS AGO. Naturally I told my husband and we decided immediately that we need to step forward for her, my sister and I have different mothers and were raised largely apart from one another thus the extreme differences in our lives. This morning I called the office in the town she lives to try and find her social worker as soon as they opened and finally made contact this afternoon and from what I understand my niece is now a permanent child in care ( I am sorry I dont know the terminology) and is now considered adoptable. This makes me think her foster parents are wanting to adopt her, but I only just found out about her and want desperately to bring her into my family and at least be able to offer her a piece of her heritage. Is it wrong of me to move forward? Is it too little too late? The social worker didn't tell me the foster parents were wanting to make their home hers forever and seemed overjoyed that a family member had surfaced. I just want to do the right thing, and clearly no one else in that side of the family feels the same way.