I agree completely with @Failingatforty
"I would not send her the link. You know she has mental health problems, which whilst not being an excuse for her nasty review, could result in a crisis if she feels publicly shamed.
She did something unpleasant that her your feelings but the whole thing really needs to end now. She could end up self-harming or similar otherwise."
The woman is now in a living nightmare, with the threads here calling her names, television discussing it like they know anything about the people involved and gutter press. This would destroy anyone, whether they had made a mistake or not.
MH is very complex and difficulties can manifest themselves in all sorts of ways. Who is anyone to judge? OP needs to take some action now, tell the friend maybe July is not a good idea after what happened, best for the friend to continue getting help and wish her the best.
If the friend is upset about the public outing and abuse that has followed, I think she has better reason to complain than OP! She made a mistake and she's dealing with complex issues, then the OP causes all this abuse and attack online, on television and in gutter press? What is worse? Which is more dangerous and out of proportion?
I agree, these threads need to be taken down, this has turned very nasty and dangerous.