13 Red Flags of Potentially Toxic Friendships | Psychology Today United Kingdom
I’m not a big fan of using the word toxic but this article does give some good guidance about realising a friendship may not be healthy for our wellbeing. I think trusting your intuition/gut is probably the best advice.
How do you feel after you’ve spent time with her? Do you feel better or do you feel drained?
I wouldn’t fixate too much on why this woman says and does things, I’d focus on yourself and how you feel.