I’d go w the person who said to reply w something like “I am completely blindsided by this and upset and need some time to process this before I respond/want to respond.” That’s how I’d reply anyway to ensure she knew I wasn’t Fkn happy about it but also not lash out and let her know you’ll be sending her another email more detailed w what you wanna do when you can actually think clearly enuff to do so, all the while STILL letting her know what you think of her piss poor spineless, non confrontational email. Trauma IMO is a whole other beast and when a shrink just drops a client who has taken the time and bravery to open up about such stuff it just rubs me wrong no matter the reason no matter how legit.

You have every right to feel pissed off confused exc exc…I think that short but sweet reply is way to go…again, express your feelings without lashing out and letting her know a follow up is coming.