What does psychological abuse look like?

Today it looked like this.

Where would I even BEGIN to explain to someone (let alone a lawyer or a judge) how this is abusive behaviour (on a multitude of levels), and why it sent me into a panic attack?

This is how a covert narcissist operates. The abuse occurs below the surface in covert, passive-aggressive ways designed specifically for the target. My particular narcissist usually ensures plausible deniability.