My 10 month old puppy won't go potty outside.?

I have a 10 month old Papillon that will not go to the bathroom outside, she is a rescue puppy that we just got today, apparently she was kept in the bedroom of the other persons house and went potty on a puppy pad, we have one set up inside and in the last 6 hours she has eaten about a cup and a half of food and well over a cup or 2 of water and still no potty inside or outside, Also she apparently has never been on a leash outside because when we put her on the ground she just stands there and also when we try to walk and "tug" her gently she puts the brakes on immediately and refuses to walk with us. Please help me with ANY suggestions all will be openly taken :D