Roxy bounced back as soon as she started the antibiotics. Pooh is normal and no more yakking. In fact, she just finished chewing on chloe(the cat). The vet was pretty amused I took in the stool sample for them to check. She said, lots of cat fur, bird seed, but no signs of worms or sneakers.
So far, every store I have asked that sells the PB will take it back.