Work in a place with around 60 others so obviously everyone has their own groups they stick too.
I am good friends with a woman and have been for around 5 years however the last year or so she has become very hard work. Snappy with others and when we go on nights out as a group she cries and brings the mood right down. She isn't depressed or anything she really is just loves attention. She is in her 40s and single no kids so never really is busy like the rest of us are. Anyway I am close to three other women in the place and we have decided to go on a night out in a few weeks but they don't want other friend to go. Now she does eat with us at lunch but again the conversations are always very negative.
We cannot say that we are going out as last time we did she barked at us where's my invite so we ended up saying oh yes of course you're invited and along she came and cried most of the night. She also is very rude with one of the other women in the group and tells 'funny' stories about her at lunch which aren't funny and are more to embarrass her. Any time anyone confronts her about her behaviour she runs off to management and says she is feeling picked on.
are we really awful to just not mention the night out and hope she doesn't find out or am I being a terrible person