My therapist told me in an email: "It is clear you feel betrayed and you feel you didn't get to end things on your terms."

No, I was betrayed and I literally did not get to end things on my terms. The use of the word "feel" is pure gaslighting. This was part of a campaign of sorts wherein she tried to get me to take responsibly for the ruinous outcome of therapy and absolve herself of the mess she was running from. Even now I find it sickening.