[FirstYorkie]

I don't think she's doing it for spite either!

More likely is that the weather has gotten colder and/or wetter and she doesn't like to go outside. Although, as Jeanie mentioned, making sure that she doesn't have a bladder infection would be prudent.

The best thing would be to go back to the basics. Keep her contained in rooms (or a crate) where she can't do much damage when you can't supervise her - like the kitchen or laundry room. When you are there, take her out frequently and reward her heavily (with praise and treats) for pottying appropriately. If you catch her in the act of pottying wrong, interrupt with a sharp "no" and rush her to the appropriate spot. If you find accidents after they've happened, there is nothing you can do but clean them up - preferably with an enzymatic cleaner from the petstore that will remove the odor.

PS. Oh, and by the way, if she hasn't been trained to use a pee pad, replacing the bathroom rug with the pee pad may be your problem. You've taken away her indoor potty spot. I realize having her pee on the rug isn't ideal, but you might see if putting the rug back in the bathroom takes care of your problem.