I think the most obvious connect I can think of would be Daphne. With them both being star performers of the dollhouse in different ways, I can imagine that their paths cross all the time in rehearsals etc. Perhaps they can become good friends? Daphne isn't a wolf, but she is a shifter, so she can always join Amber if she needs company.
Next up would probably be Daisy, for similar reasons. With them both working at the dollhouse (even though Daisy is on bar), there is plenty of potential for their paths crossing. Also, Daisy is a wolf too, so potentially she could join Daisy on the moon runs?
Other than that, there is loads of potential for her knowing my wolves Lucas, Kai and Sebastian. All would be friendly with fellow wolves.
Other then that, there is my usual roster of characters if you have anything else in mind!