>>6366430No. The long answer is that if you are an attractive enough/morally strong enough person to change a girl from a whore into a good Christian girl, you wouldn't need to waste your time on a whore, you would just find a good Christian girl to wife up.
If you're not morally strong enough, it doesn't matter how good you look. She'll take her cue from you and go back to being a jezebel. If you're not attractive enough, she won't bother with you because she's a jezebel. She'll only mess with someone she perceives to be more attractive than herself; she won't date down. The only reason she would date someone less attractive than her would be out of desperation, and as soon as an alternative comes along she'll go with that guy because she's a jezebel.
But once you're at a stage where you are attractive and morally strong (enough), it begs the question as to why you're dealing with this girl. There's only a couple of reasonable explanations, the most likely being that you have some prior history with her. Even if you have a prior history, there's only so many situations where you won't be revealing a sort of weakness by dating her.
So no, it isn't worth it. You could be putting your effort into bettering yourself, or into a girl who isn't a whore. There are only a very limited number of situations where it is worth it.