Are they close to you, or not?
If they are close to you, provide emotional support.
If they are not close to you, find out if there is something they need- a summer job, etc. Hire them, or mentor them, or something.
Also don’t be too pushy, but show you care. Ask them how they’re doing, don’t just ignore them, act to them as if they are just normal kids (which they are)
Don’t ever ever ever lecture or try to teach them something- wait until they ask. It could take months but eventually they will.