Exactly man, I see all the goodwill of the developer, but honestly the clothes are not the most important point, which in this case are: character development and of course erotic scenes, so Astoria, Cho (very good blowjob scene, and it's more like these that we want), the girl with big tits (I don’t remember her name) anyway, I’d prefer one more loli character but that’s personal opinion.
I had this problem, click on shift+g and change the renderer option (I think you are with automatically choose) for me it worked with the openGL option but try each option if it doesn't work
Sadly, we won't ever see a loli character from this game. It's the whole reason why they changed Astoria's model after all.
If you're playing a save from beforehand, you might need to try using the debug for Cho to 'reset' her. Otherwise, a new game might fix your issue. Yes, she gives you a BJ after defeating Slytherin. You'll need to do all public favors for Cho with discovering stuff about Slytherin before training Cho on what position and clothing would fit.
