I haven't read the entire thread, but the feel I got from the first page was "she didn't get good attention afterwards".
Really? OK...maybe not immediate, but as soon as they got back to the resort, an ambulance was offered (and declined), a medical van/visit was offered (and declined), and they had a message from a manager following up, followed by a call from a manager at the bus company. OK, so they didn't get a dinner, or a basket, or whatever...but to me, it does seem like there was concern and that the things that were offered were rejected.
I'm sorry this happened to your friend - but I wouldn't do anything...especially after I was making posts on a message board about how my father, the lawyer, was saying "cha-ching". A good defense lawyer will find all these posts and use them as evidence against them, IMO.