I wanted to let y'all know about this, it felt like ignoring the elephant in the room otherwise, but this isn't something I can talk about much yet.
A few weeks ago, I noticed that Maggie was looking very round in the middle, a very obvious change. I took her in to the vet last week, and from the X-rays it looked like something was going on, but they couldn't tell exactly what. There was some fluid, which they were able to sample for testing, and they took blood to test as well.
Nothing obvious came back, so yesterday I took her in for an abdominal ultrasound. And, yeah, looks like it's some kind of carcinoma. They got some cells to test, and we should hear next week some time, what kind it is, and thus what the prognosis is, what treatment is available, all that. I'm trying not to freak out too much yet, but it's hard. My baby girl.