Apparently she became separated from them.
I feel sorry for the bouncers, as I imagine they were just doing their job and following the rules set down for them, as they understood them. Had they let her into the club drunk, and something had happened inside to cause her harm, then they'd have been blamed for not turning her away.
Taken from
http://www.thesite.org/drink-and-drugs/drinking-alcohol/drinking-and-the-law-2-9120.html
It seems the bouncers were following the law to the letter. Perhaps it needs looking at, to add some form of care (ie to call a cab for someone apparently vulnerable through alcohol). However, whether you could easily get a very drunk person to comply is another matter, and if they have no means to pay a cab, I imagine it could get very nasty. I guess at the end of the day, its down to personal responsibility - which is fallible
Its the same tragic story time and time again - young people not sticking together on a night out, and not making sure everyone gets homes safely. Not blaming them, just sad that the message still doesn't get through. The only person to blame is the person who killed her.