I hope she'll be ok too. She's spayed, so it's not pyometra...the only thing that comes close to describing her condition is this:
A defect and open communication (fistula) between the rectum and vagina may lead to the passage of watery fecal material from the vagina.
When you're ready to talk about her or if you already have, give me the link.

It sounds like she has quite a story to tell...she's so lucky to have you!