my cousins undercover lover

Okay so I have this cousin she is the same age as me and we aren't that close . But Lately she been scaring me 😂she plays gta 24/7 and whatever she tells me I keep it a secrete but lately she met this dude on her game an she claimed he went to our which I found out he didn't I was on her phone and found out he was like 24, 25 &' I'm like damn he go old . I want her to use her head about how dudes that age are nasty creeps and I just wanna protect her because nobody else looks out for her and I don't want her to get rapped by him or kidnapped because he could be a rapist what should I do ? I mean she loves trying to find a way to hookup with creeps what should I do ? Oh by the way they may have did some nasty things  🌚