Brian called a bit ago. I'm not sure of all the test results, but Ripley definitely has a mass in her chest (probably cancer). And she might have some sort of auto-immune disease at work as well. Today's options were:
1. spend a few thousand $$ for surgery and treatment that might not amount to anything
2. have her euthanized
3. take her home
Brian opted for #3 for now. I'm sure I will need to talk to our vet tomorrow, but things obviously aren't looking good.