Someone is leaving our place of work. She was covering a colleagues maternity leave for 9 months. We don't get on. I tried very hard to help her learn the job but it seems that she refused to be helped, then got the arse when she messed up. She repeatedly ignored the fairly relaexed 'office rules' which caused a number of problems for me and my othr colleagues. Out of work we would never be friends.
I have been friendly and helpful all along, there has been no real problem between us but tbh I'm glad she is going (as are several others)
Another colleague has organised a lunch on her last day at a pretty expensive place. It is just assumed that we will all go. I am not exactly flush but would make the effort for someone I like and get on with.
So, AIBU to not go? I haven't said that I am going, its just assumed that I am.