I had this problem when my babe was first born and had bird legs. The pee would just roll off the fleece out the leg. It drove me batty! I ended up just using fitteds and covers. You might stick with your prefold/cover combo and just add a strip of fleece against her skin to keep her dry. Just go to Joann's and get some microfleece and cut it into strips. You don't have to do anything to the edges. Fleece doesn't fray. Sorry I can't help you more.