Replies to 'Defining Your Authentic Self'

 1) Who did your daughter go to? She came to you. Unless she also asked your sister and your niece to help her with your baby, I think she wants YOU to help her with her baby.  Don't see it as a competition, baby's deserve all the love and caring they can get. You may need their help from time to time, so don't alienate them because you are suspicious of their behavior. They may be acting out of kindness and love.
2) It's your daughter's baby. No matter what happens, or how much of a hand you have in raising this child, I think you need to bear in mind that your daughter is the mother of it. Explore ways to make sure that she is the best mother she can be. She is in a controlled environment right now, so staying clean is easier than it will be on the outside. She will struggle and perhaps fall down when she gets out unless you lay the groundwork for success now. If you feel that she needs some guidance to help her stay clean and be a good mother, help her to find agencies, counseling, and a new group of friends before she gets out.
This child may be her salvation, she may try her hardest to be responsible for it. Or she may slide down the siippery slope of self-destruction again and have one more person she has failed on her list. Help her to help herself and her child.