My best friend is pregnant! SHE'S ONLY IN 8TH GRADE! someone help!!?

okay so i have this friend. she is 14 in 8th grade. now she was sleeping with this boy and they had totally forgot about using a rubber. so they were stupid and had unprotected . now she has no one to help her. she cannot tell her parents yet because they are abusive, and who knows what theyll do when she tells them. and her auntie was gonna help her get an abortion, but now she changed her mind. now the messed up part is that the baby's daddy, is my brother. and we cannot tell our mom. well we might have to though. so i am stuk and i dont know how to help. oh and i forgot to add in that right before my friend told my brother that she was pregnant, he dumped her. EVEN BETTER! oh...this sux, im stuk and need some advise as a friend. please and thanks.