if you're gonna hire her as a whore, then pay her a weekly allowance and have her at your beckon-call. If you want a relationship, then you need to stop the $ shit. Personally, I'd rather just hire her to be a whore. It'd probably be way cheaper that way, and you'd establish a ground rule that she's your employee, you're her boss, and whatever you say goes. If you try to do a relationship with a chick like this then god knows how much money she'll end up costing you (b/c she WILL try to push her bills on you sooner or later ... that's what women do.. push their bills, their kids ... all of their responsibilities onto a man to take care of), and she'll fight you tooth and nail over every sexual act you want to perform.
Like every woman, she puts on a good show to sell herself, but once she thinks she's "bought" she'll start slacking off. But, if you treat her like an employee and you're the boss .. you will naturally have dominance over here, there will be more clear-cut rules, and way less drama.
You also have to think of this .. if she's sucking you off for $, who else is she sucking off? She could be the town bj queen for all you know. God knows what kind of STD's she's lapping all over your cock when she sucks you off.
I'd steer clear of this chick, personally. Drama and finances are a bad combination. She didn't magically become broke b/c she's a responsible person. She's an irresponisble cunt that still hasn't learned her lesson. After all, she thinks she's worth $50 for a bj, but not $3. That means she still has an ego and thinks she's worth a lot of money. She hasn't truly crashed and burned yet. You're just another branch on the tree she's trying to grab a hold of while she's on her way down. You can let her hang on... and she'll drag you down with her ... or just kick her to the curb and get on with life.
What you really should do right now (I know this is an old post... I remember reading it a while back) ... is just ignore her for days on end. Act like it was nice being with her, but she's not the shit and you've got more important shit in your life. You're currently over-ingratiating her. You admit to her that she's your sexual outlet... that makes her feel superior, like she has you by the balls and she'll try to leverage that to get more money or work some other bull shit deal.
Look, if you want a whore, then pay her $100 to fuck you for an hour, and send her ass home. But, if you want a friend, then stop having her suck your dick. And if you want a relationship, then be prepared to pay all the bills this girl has and for her to rack up more, b/c all you're teaching her is that guys like you are fucking suckers for sexual favors and she can get a man to pay her bills as long as she does nothing more than suck a dick and perhaps spread her legs later. ANY woman can suck a dick and spread her legs. You're doing no service to this woman by just reinforcing her loser female "I can sell my body, but I'm worth diamonds for my pussy" mentality.
She's a fucking cunt that got herself in a bad situation, and she needs to have a man dominate her and take control of her. That won't happen if you keep doing it half-assed. If that's what you want, then go all-in, and do it. But, you don't sound like that's what you want. So, figure your shit out and get on with life.