Anxiety has absolutely nothing to do with this atrocious negative social behaviour. At least not in my books. One should still be able to behave themselves. While I do think GAD affects us socially I am pretty sure that would play out as introversion instead of aggressively assertive. In my opinion she is using GAD as an excuse to be irresponsible and downright rude.

In the meantime, you need some support and understanding for what you are enduring. I suggest you find a support group for friends and family members of those with mood disorders.