Not nuts at all!

IMO- I would at least go and see your old T face-to-face, sounds to me like you both managed to clear the air a little and have paved the way forward for better communication between you. As you have said before- you do trust her, and it would be good to talk things through a little more before making a permanent decision to switch to the analytical T.

I would also go and try out the new analytical T, and see what you think, and also explain the situation to her too.

Best of luck!...............and let us know how you get on.