How can I help my friend? (Not sure which category to post this in)

Ok so recently one of my friends (14) got a boyfriend (15) and they have been doing a lot of things together for instance he’s fingered her, eaten her out, had his bare dick on her bare vagina, etc. I’ve asked her how some of these things happened and she just said that she’s no even sure how and that they were just into it. I’m worried that he’s somehow going to get her to let him take her v card and that she’ll end up pregnant if something isn’t done about it soon.