I'm sorry it's a blunt question but I don't know anyone else to ask.
My sister has had OCD for around ten years or so. At the beginning she wouldn't get help and it was horrible living with her. I know it's horrible of me to say that but it truly was. Since then she's had medication and a few rounds of CBT too which have helped her manage it.
Day to day she is fine BUT only if we can hide certain things from her / not mention certain things/ do certain things when she isn't there. If she suspects something we "have to" lie. Basically, everything you double check in your head to make sure it won't cause a scene.
She also seems to pick on people she can get away with it with like me and our DM. Other people she is ok with, completely fine.
It's like walking on eggshells, constantly double checking everything you do/ sat around her. I felt like I couldn't breathe. She would have massive , huge arguments if we didn't comply with her if she requested us to do a ritual. It affected my mental health and I didn't realise it at the time when I finally moved out and could just breathe.
Is this is what it's like living with people with OCD? Is this how it is?
Of course please please don't get me wrong, I am fully aware how hard it must be for her. A million times. However, I am human too.