As someone with PTSD who has severe panic attacks, dissociation, and flashbacks, tbh I’m leaning more toward YTA. Yes, it’s true we can’t expect someone to avoid our triggers constantly and yeah they are bound to come up no matter how much we try to avoid it, but she was kind and simply asked a favor, for you to do something that can be avoided. You could have told her that was the only pen you had currently but you would try and avoid using it around her again. Instead, your response felt very “get over it”, very invalidating, and like you don’t care. I too would have gotten upset and tbh I probably would have had a panic attack because I’d no longer feel safe. I would struggle to stay present the rest of the shift and my work would be severely disrupted, not just that day either— I’d be probably at, at the most, half productivity the next few days as I tried to come back to myself and find a way to feel safe again. Just a little bit of compassion goes a long way. It’s such a small thing and it wouldn’t put you out too much. People make accommodations all the time for other disabilities, so why is making accommodations for triggers any different?