Thanks for asking! Yes, Blake is fine. I took her to the animal hospital last night as soon as I got your message (it didn't sound like coccidia, but I was worried anyway). It turns out that she had a blockage of feces, and once that was removed she was fine. She wanted to eat right away and had a normal bowel movement. And this morning she was jumping all over the place and wanting to play again!
Thanks so much for your help -- I am so relieved. And I'm so happy to have found this forum for advice!