Hi. I'm sorry you're not getting any straight answers from that woman. It might be time to involve the police. Maybe she'll talk to THEM
This might be some kind of scam to get money from you, so be careful
I sincerely hope that they really do have your little one and will give him back. Is he microchipped or tatooed? You might need to prove that it's your dog, kwim?
I have my fingers crossed for you!