So, sort of good news, for now at least. Kitty made it through her blood transfusion and had a bone marrow aspirate, which we're hoping gives us a definitive diagnosis. She's home now, and resting, but she's not out of the woods. A lot rides on the aspirate giving us a definitive diagnosis and if it's treatable.
Her name is Tinkerbell, and she's my mom's cat. I bought her and her sister, Jasmine, for my mom a few months after my dad passed. They're Persians, and they helped my mom immensely in dealing with her grief. So she means a lot to both me and my mom for reasons that go beyond simply loving your pets. It may be silly to get so worked up over a cat, but I'm really hoping and praying for her to get better.