It is so hard to lose a trusted doctor or therapist. When my old pdoc retired, I was devastated. She had been my doctor over 10 years. I felt like I'd been punched in the gut. It was so hard even though I knew she had been such a hard worker and conscietous doctor and deserved to enjoy her retirement. I have a new pdoc now; well, I say new, but he's been my pdoc since 2018. He's a great doctor, but somehow, I don't have quite the same attachment to him as I did to my old pdoc.

I don't think a card and flowers is overdoing it for a therapist you really like. I know how you feel; I hate endings too. Hopefully, your new therapist will be wonderful as well.