
If I had to guess, because her actions don’t line up with the DSM-5, which is the official diagnostic criteria. Most likely what is going on is the roommate is forcing OP to perform certain tasks because of her ocd when according to the DSM-5 ocd is mostly aimed at the self, think “if I don’t turn the knob three times before opening the door something bad will happen”.
Her friend told me as well as she said she had the same like type of ocd as my sister(i dont know which one it is) and i was talking to my sister and she doesnt think that my roommate has it but also she has me follow certain standards but doesnt do it for herself. Like i have to make my bed every day but she hasnt made her bed in a week