$3900 is an outragous price to pay for two yorkies let alone two yorkies without papers, that are not house trained, over bred and from a poor breeder at that. You really need to take them both and have them spayed and neutered ASAP. I do not think you have any legal actions with the police but you might be able to sue her. Highly doubt you will get anywhere with that either. If you want to breed you need to go about it the proper way and what you have done is far from proper. Please do your homework and chalk this up to a hard lesson learned.
If you are not able to care for them you could contact a rescue and turn them over. I hardly doubt you will be able to recoup your losses at this point. Very sad.....
