I read this thing about potty training puppies. If the dog goes to the bathroom in the house, wipe/pick up whatever she does and place it where you would like her to go. Say she goes to the bathroom in your bedroom, but you want her the go on the pads. Wipe up the urine or poo and place it on the pad. But make sure you clean the bad spot to go to the bathroom so she doesn't go there again.
Dogs like to go in the same spot almost everytime. If you want her to go on the pads, then place her urine or poo on it and soon she will go there! Hope this helps. Good luck!