My sister and I are in our 30s, live in the same city and see each other every 2-3 weeks. We get along so well and always have. But she has an annoying habit that is so unbearable I feel I can't spend time with her anymore.
She hasn't been diagnosed or sought medical help for anxiety or any other physical or mental illness, but like most of us she has some level of anxiety and has some body focused repetitive behaviours. Since been a teen she has had a habit of pulling out individual strands of head hair and closely examining them. That's pretty annoying but it's bearable.
But the last few years she has a habit of pulling out individual strands, and poking them in between her teeth or using them to floss her teeth. She does this right in front of me, during lunch, while we are chatting, whatever we are doing. I find it so disgusting to watch I can't bear it. I try to ignore it but it goes on continuously. I've asked her to stop but she just gets angry and says look away if you don't like it. I've tried that but for example if it's at the dinner table, I can still see her doing it out if the corner of my eye.
I suppose it's not hurting me but I find it disgusting, and also disrespectful that she doesn't care enough about me to not do it in front of me. She wouldn't do it in front of her friends or at work, so I know she can stop. Why not wait until she gets home, or worst case go to the bathroom for a few minutes and do it.
Am I over reacting? I haven't told her this and I try to keep a blank but I hate it so so much and feel rage when I even think about it. I don't want to spend time with her anymore. It's such a shame though because we get on so well.