If it were your birthday and you asked your friend if she wanted a drink (she didn't offer you one) she was drunk and said 'a beer', no please or thank you. You go over to take the beer to her, she turns around quickly and accidentally knocks it over you and doesn't apologise.
She is very drunk and ends up vomiting outside and sitting on the pavement. Another friend helps her up and a third friend also gets involved.
The next day on the whatsapp group she sends out a message "Thank you so much everyone for looking after me last night!" With 0 acknowledgment of you or the fact that it was your birthday.
Just found it rude and selfish.