First,
I'm really sorry that your dog has been dognapped, and I hope you get it back quickly and safely.

Second of all, I'm assuming that they European laws about pets in public food establishments are quite different than ours are in the States.

Third, if someone was introduced to me as someone's daughter/niece/fiancee of the best friend's bandmate I wouldn't have an issue. However, if she, out of nowhere decides that I was gay/straight/trans/whatever just based on a moment of conversation, my guard would be up considerably.

Fourth, if her dog was able to communicate to her that she was in love with your dog, that would further put my defenses up.

In the U.S., we have dog walking services, or pet-sitters, and out here, those people are checked out, references, past history, etc., before most people will let them anywhere near their dog unattended.

I'm assuming that things on the Continent are different than here, radically.

I would go to the police, I would be talking to your best friend about his accordionist and who this girl was, and I would also be doing everything in my power to track this person down.

I hope you get Asta back, and quickly.

Gary

I'm blessed watching God do what He does best. I've had a few rough years, and I'm still not back to where I want to be, but I'm on the way and things are looking far better now than what they were!