Is anyone around Lansing, Michigan selling a baby, short-haired guinea pig? Or know of anybody who is selling?

I just recently bought a baby female guinea pig from Petsmart, and she died of an URI 2 weeks later. No exotic vet was available by the time I realized something was wrong, so I'm looking for one that isn't sold in a pet store. The local humane society doesn't have any guinea pigs available either.