If you just found her...and if she has just given birth...she may not want to eat for a while...she may need to adjust to captivity and many snakes don't eat during delivery or right after. Sorry about the stillborns...it sucks, I know, but it does happen often. I wouldn't use live mice...give her time and she will start eating. Offer nightcrawlers, fish fillet (from the safe fish list on the caresheet) or frozen/thawed pinkies.