I think there are sprays that you can find at PetSmart called "housebreaking sprays". They have some kind of pheromone/attractant in it that induces peeing. Perhaps you could try it?
I would recommend giving her an X-pen until she is fully housebroken, and completely potty-pad or newspaper the entire floor. It will give her less places for her to go potty on. I would also heavily praise and give her treats if you catch her using the potty pad. If you see her sniffing around or showing any signs of peeing or pooping, bring her over to the pad immediately and set her down there.
For a somewhat cheaper way to buy puppy pads, here is a box of 100 of them at Amazon for $19.99:
Amazon .
I've also heard of some people using dog litter, in case the puppy pads get too pricey.
A 25 pound bag is $23.99:
Amazon