Nothing really. She was given a minor mention in some random Star Wars encyclopedia about SW species. Basically, a minor blurb in an article about Kaminoans. IC: 501st was the first book she's been featured in.
I very much doubt that. I don't remember exactly, but I believe Karen alluded to Kina Ha being somewhere around 1,000 years old (possibly a hundred or two older). That's no where near enough to have been alive in Revan's time (3900's BBY).
I'm probably gonna specialize in the World Wars, but otherwise general US and/or world history. That'll make sure Treyarch comes to me for advice on their next game, Call of Duty 7: Yes, We're Doing World War 2 Again.