Mother of two demons?! ~A baby Will and Baby Bill x reader story~

(Y/N) has always been interested in weird things and always wanted something that was out of the ordinary to happen. So she moves to Gravity Falls to try to get into the mysterious town feel. After hearing cool stories from her cousin Wendy, she decided to move there, and also because you wanted away from collage, your parents and everything else. What she don't expect tho, is two little babies appear on her doorstep. How is a 20 year old supposed to take care of two small babies?? Especially when they have powers?! How will everyone react when they find out about the children? How will everything play out?