Try not to impose your idea of what is the 'right way' onto them, or enforce any one else's idea. They are their own person, they have to learn what is right for them. Safety concerns, yes, but as long as they are happy with their expression then let them. If they are being 'coerced' into something they are not, it will come to light. If you try to force one way or another you may find that you are pushing into the exact scenario you want to help them avoid.
Relax, let them know you are safe to talk to, listen, communicate without judgment.
As for being a 'stereotype' Well, stereotypes exist for a reason. They'll find their own way to express, I know I did. I started out a bit too strong and then eased into my own. I'm sure they will as well.