Hello Queens, throwaway account here!

Long story short, my ex is a really awful person who has done some very awful things in his relationship with me from a few years ago. Most of you would definitely see it as a deal breaker in your relationship if your man had treated his ex like that, even if he doesn't treat you that way.

Anyway, I have created a burner email and would like to use it to make a Facebook so I can get in contact with his new girlfriend so I can inform her on his actions. Theoretically, if she's a good person at all (she should be; she seems normal and educated, unlike him lol), she will leave him. But it's up to her. I just want to help her make an informed decision.

Do you lovely Queens have any advice on how I should go about this on Facebook? It's the only social media on which I have been able to find her. It's really important to me to be able to help a sister out where I can!