this message may be
offensive
ah shit, i know this is a bit late but i just looked through notifs and decided to pop in. (if u have it sorted out already this will be a bit useless)
i have dealt with stuff like this before, recently losing my online friend to suicide.
just a simple message like "love u" "cant wait to hear from u again (:" "hope u're doing well" every day or so is enough, if theyre fine they will get the messages and reply shortly after, if not its best to keep the messages coming every week or so until u know theyre not gonna answer.
with online friends, its not exaclty like u will know immediately, it depends if they've wrote a letter, since only family is allowed to read the suicide letter but they get their possessions, and thats how i found out abt my friend, their family contacted me asking if i was close to them and i answered truthfully so they'd told me what happened.
if u know them irl then maybe when u can, try to check up on them or contact family in any way (thats only if u can!!)
it is a bit of a panic state when u lose someone to suicide, if u ever need to chat im here! im good at listening and i can give some pretty good advice as well. ^^