oh man if I were you I'd be pissed too! I agree offer to pay for the chi's spay. I can't believe the bird store that was "fostering" her would just give her away to just anyone intact!
Poor thing, I really hope she's not pg.
Sometimes, no actually a LOT of the times, family just doesn't listen. BIL wants to get another puppy, a french bulldog! From Craigslist! Those dogs have so many health problems and he wants to just get one from a stranger on CL!
His last dog was ignored and only lived for 6 years, and meanwhile he has a senior rat terrier ignored in the back yard all the time too!