If she so doesn't want to be a homewrecker, then why the heck did she let your H come there in the first place - and why hasn't she put him on the first plane home???
Honey, these people are sick and twisted and have tied you up in such knots that you can't even trust your own judgment. NEVER trust the OW, ESPECIALLY not one who you know has participated in schemes to decieve you before. For all you know, this is just some elaborate ruse to convince you they aren't sleeping together when they really are.
Do not let them suck you into their sick game. Do not communicate anymore with her - she is beneath you. If she were a person of quality, she would never have let him come, or would have shipped him immediately home. Everything else is BS.
Now - quit obsessing about her or them. Continue on your (very appropriate) quest to figure out how you are going to get out of this financial hole your H has dug. Take a mental vacation from the R while he's gone, consider going dark on him while he's gone (let him WONDER what's happened to you! Let him WORRY!!!) - and focus on GAL and on yourself.
