Serious problem plz help?

[ring]

i have an friend who has an older ex gf, her ex is a psycho that's why they broke up but it seems like my friend is abusing drugs she keeps seeing her ex. every time i ask her to hang out she has an excuse like; she didn't sleep in 4 days or she has a migraine nd is throwing up. one time they got into a huge fight and her ex went to my friends house told her mother my friend is doing drugs her mom didnt do anything i want to get involved. her mother wont help then ill get the law involved since i know her ex sells drugs prescribed to her. please help i have no idea who to ask for help

[eddis]

It has nothing to do with you, mind your own business.

[han]

Talk to your friend and ask if she's been doing drugs. Make sure she knows you care for her and you want only what's best for her. Tell her you don't trust that ex. If you're lucky, she'll ask you for help.

[geol19]

You do not whant to get this on to your head, you will not change peoples mind.