I called and left a detailed message with the appt request. I did feel relief after making the call, my mind was clear and free for a while.
It's like I did what I could for the inner teen, who wants to communicate with originalT; all I can do is ask for the opportunity. It seemed to calm the urgent feelings.

Possible outcomes:
1) no response at all
2) return call with yes, when would you like to come in
3) return call with no, I cannot give you an appt

Overall, odds are not in teenager's favor.

For #3, there may be various reasons given, and I am considering that the actual reason does not matter so much (since I'm likely to argue against some of them, like "You've got a new therapist and can talk to her" - but I only met her once! this is not about her, it's about finishing with you!; or "The HMO requested that I not see prior clients" -- but this isn't to continue therapy, the purpose is to end the therapy! I had the therapy with YOU, not the HMO!, etc, etc, etc.), Teenager argued with adults all the time.

But, since I'm doing the asking, I need to be ready to respond to the No in a graceful and composed way.
(you're my suppression....)