YOW. First, it was OVER with you and you didn't get it. Second, she was DESPARATE for money and you seemed her only choice. Last, she "rewarded" you with sex and satisfied herself. Let her go---it's still OVER even if you don't see it.
1-you paid her bill but she continued to treat you the same way....she used you. 2-she was stranded at the airport? if she couldn't pay her phone bill, how did she afford a plane ticket? again, she's using you. it wouldn't surprise me if she uses others for other material things. 3-She banged you and paid you....hmmm
Yeesh. Not a pretty situation. I have never asked for financial help from any man I have ever dated and I work in the arts making NO money. lol!
She is a damsel in distress and you want to rescue her.