Would my dog have been euthanised?

Okay so idk if this is the right place to ask but idk where is so I'm posting here.

Basically in 2022 I had a family friend's dog dumped on me. She was a put bull cross xl bully. I had her for like a year but nothing was in my name so if she is alive I have no way of getting her back but I just want closure. My mother hates dogs and took my dog one day. I was told the dog was rehomed. A few months later I was told (by the dogs og owner) that she was actually handed to the police as a "dabgerous dog" pit bulls were illegal at the time and xl's are now (im in the england). Would she have immediately been euthanised? Is there a way to find out? If she is alive I would take her back in a heartbeat (I moved out of my mothers house) but I know it's not going to be possible so I just want to know if shes likely alive and if theres a way to check.