We took Mocha to the vet yesterday, though she was looking much better. She had her stitches removed and was given a shot of antibiotics. The vet thinks it was mastitis that caused the infection and that infection in the milk made the kittens sick. He assured me all should be well now. I'm still going to be keeping an eye on the kittens though.
Checking the garden, I decided it was time to pick the first Silvery Fir Tree tomato as it was starting to crack. I haven't cut into it yet, but it looks nice; slightly squishy, but overall uniform in color.