Hang in there, maybe the bathroom is just too big...? I have Pippa in a small playpen with bed, water on one side and a pee pad in a plastic frame on the other. Not a lot of room for anything else. Her choice is pottying IN her bed, BY her food, or ON the pad. So far she chooses the pad. HOWEVER, if I don't get it picked up right away she has no problem running through it and tracking it all over. We've had her four days and she has had a bath every day...
Wish I could be more help.