Godmother rights? If your a lawyer or work w. the court this is for you.?

My friend is 15. she just had a baby (alyce of 2 months) & the father has never really been apart of the life except for a few times. Hes even been abusive when she was pregnant such as pushing her & cursing @ her. The baby was taken away from my friend cause of domestic violence & put in a foster home. when she did have the baby i always came by & gave her stuff like shampoos, diapers, clothes, etc to help support the baby. torie said i was her god mother & that if anything happened id be the person she called. well they took the baby away & now she needs my help. if im the godmother could i get the baby rather than the foster parents. & what kind of proof would i need to show that im the godmother or what process would i have to go through? im 15 as well but my dad said hell help obviously hed be the big provider for the baby. he makes a good income & we live comfortably & can support the child w.out a doubt. help please. how could i win the baby over ? it means alot.