>>92358796It's the same thing I tell everyone
Go to google right now
Google her name, and find out everything you can about her .
Then, take all the evidence you gather, and take it to her. Show it to her.
Tell her that if she becomes a vtuber, all of this information is going to become public knowledge. It'll be spread on dox threads on reddit, if it includes her face it'll be included on pictures of her on /vt/.
There is no erasing what she has done on the internet. Becoming popular will just make it more well-known. And then tell her, that if you can find that information, anyone else can too. And everyone else who may be stalking her is going to be very similar in interests to you. Would she be fine being stalked by another you?