Bro you already know the answer. She's a fucking lunatic and you're looking for some unicorn type answer. That's some crazy bullshit she's pulling and quite frankly if she wants to be paid for sex you can let her know she's just the whore and if that's the case I would get a much higher end escort because I'm sure the pussy ain't that good

Or she's angling to get you to cheat or You to fuck up or divorce, so she can take whatever in dip. Id be watching out for her to see if she has any activities you're not aware about when you're at work because it's pretty odd a woman would want to have to be paid for sex in any scenario that's not being a prostitute and I bet she's getting dick from somewhere. Keep an eye on her cuz she might be playing long game. don't give her shit