Hey! You already know me and Cherry, and out of my roster she could know a few more.
There's Vic at mobdog, who I briefly mentioned to you in Cherry's dropbox. He's one of the camp Officers and would have been responsible for vetting her and Raleigh when they first got to the camp to make sure they were trustworthy and wouldn't have caused the camp any problems by staying. Like I mentioned, he doesn't really visit any bitch tents but he'd be nice to her all the same, no matter what. He lost his first wife to a zombie bite so he'd be extra nice to her too as a result of that. They probably get along but aren't necessarily close (yet).
Olivia at sprinted scouts for the LBJ Library, an allied shelter of the Dog Park. They could've had backstory while she was still in downtown Austin, maybe fighting over supplies or something! Now that the Dog Park and LBJ are allied, she visits every once in a while. And Bree and the rest of the Dog Park inhabitants are welcome at the LBJ or at the LBJ's lending library that serves all of Austin, too.
Pete at itakunai lives at UMCB and surreptitiously provides medical care to the Dog Park every once in a while. They could've met then on one of his trips, if she ever needed anything looked at! He would've probably flirted with her if they weren't in a doctor-patient relationship, though that probably would've been a while back since he's interested in one of the Dog Park residents currently.
Aaaaand then there's Nina at commonlaw who knows a few of the Dogs but hasn't yet come out there yet. She's probably the least likely right now but who knows what the future will bring!