It's not exactly a fully negative thing but, you can introduce her as someone who 'works' for you rather than 'with you' on the project when introducing her to a potential investor. You don't lose any RP but you don't gain any either. But it's a pretty scumbag thing to do, especially when earlier in the story it's what Jasmine wants: to be seen as an equal with the project and not just a guinea pig or soulless employee.
Yes, you can also reject her advances but I don't think any of these things come even close to how much you can hurt Veronica or Allison.
You can take the latest episode. You can cheat on Veronica at the hotel, showing her the MC is a piece of shit thinking with his dick and it leads to an angry Vero scene. No matter how crazy her reaction is, it still does hurt her a lot. When you are on Jasmine route and fuck the hotel woman, you only miss Jasmine's text I believe. I think they should have or could have turned it into a "funny" - ish scene where the MC reads her text, comes to her room -- can't get hard. Jasmine recognizes it, realizes he already fucked someone else and angrily kicks him out.
It's not much but it's something..
