If she chooses to do it, who cares. As long as she wasn't forced or pressured into it I really don't care, it's 100% a you problem.
After all, maybe all those problems you prattled off are because people like you demonize these people so much. Maybe if they were accepted more they wouldn't have those horrible rates. Ever think about that? That posts like this directly cause those rates to go up?
The fact that you equate sex work with slitting wrists says a lot more about you than anything else, and shows you aren't willing to talk in good faith, your mind is made up.
God forbid it's something the want to do and something they enjoy doing. It's not hard drugs, they aren't addicted to it. It doesn't harm them, if it does harm them then I'm all for helping them get out. If they chose it, it doesn't harm them, it doesn't harm you, then who cares. But you obviously equate sex work to harming yourself so I'd say you're already completely one-minded about this.