Last question: would u hv done this differently?

Ima try to be more detailed and word shit correctly because i fuck it up and then ppl interpret it the other way of how i want em to , I'd ask for help/pointers but this my last question anyway.

I have a friend, we'll call her X. she's 2 years younger than me and she's into drugs/alcohol etc ( her whole family is like that)anyway for context she is a minor and this instance took place an year ago (she's been sexually active even before then) its insane , she'd be 16 years old and she hooked up with a 32 year old man (G) , not once but she'd meet him almost every day. My friends and I were obv concerned and told her to not go and shit but she kept doing it. I left it alone after a while because just because i say something doesn't mean she's gonna follow it.

That was the first instance

She gradually started getting more distant day by day and whenever we'd meet she'd only talk abt him , stuff like i only want this dude. Which we'd reply to with uncle ji. She started using hash n weed more and more only to get caught by her mom and then her mom just scolded her lightly??????????? She then started fuckin guys my age (still way older).

So after a while i told her to go to a rehabilitation centre and got in this huge disagreement because she said she's not addicted to it cuz weed has no nicotine and shit ( she's also a heavy smoker) but if u cant live without it , its addiction in my book. Anyway we haven't talked since and I'm not sure if i should speak to her because all i can see is that something is very wrong but idk what. Its something that i have tried asking on numerous occasions but she'll say its nothing. I personally think its G's fault but idk now because she has always been heavy into drugs/smokin.