Given my conversations with her, you're right. She is a sex addict, one who's trying to reform (but having a lot of problems changing her life).
The thing is, she's hot and I haven't had sex in a looooooooooooong time. I also don't want a relationship with her, just friendship and sex. Which I shouldn't have because of her personality/issues.
I am a bad man.
There is no way to put this that isn't blunt, but here goes:
Porn exists for a reason. It's cheaper than hookers, it carries no risk of infection, nor does it have psychotic episodes on you. Sex is nice, but it isn't worth years or a lifetime of possible complications. Everyone's addicted to it a little, but they aren't necessarily addicted to sex so much as orgasm. You don't need a partner for orgasm.
And now that I have offended and embarrassed everyone I shall leave you