Your post is CYA advice. It's the socially acceptable least you could do - to encourage talking to a professional. not to imply that you owe more, or practically that you could do more, but...
You want to do something
You are afraid of making it worse
Those constraints lead to a nonpost. Who is adult and hasn't heard of a suicide hotline? Why is financial advice to always spread your investments to minimise catastrophic risk in the conmments of a site encouraging people to go all-in on a startup life? Because its nuance free and safe advice, at worst it can't hurt you for recommending it.
But what else can you do? Shrugs helplessly.