Mysterious mom

When I have coffee with my mom, it means something is definitely going wrong, not with her but with me. Maybe wrong is a strong word, unusual let's say. It means that I am in the best of moods. To say yes for coffee with my mom, I have to be in the 'today I will say yes to everything' mood. Coffee, bitter, was almost the only thing we exchanged. I feel I know her too well and at the same time she remains a mystery to me.