Ha. Yes. the thread below reminded me to ask for opinions.

My birthday is coming up in a couple of days. Although I have my doubts that I will hear anything from her (she's a bridge burner,) I want to be prepared and maybe use the opportunity.
The point being... .I have made leaps in my healing. I don't care if I will ever talk to her again (actually I prefer not much more,) but with my birthday coming up I thought about the "what if."
Not reacting at all is definitely an option I would have no problem with.
But since I feel better than ever (actually even better than before the relationship with her - probably one reason I fell for the fantasy) I thought I might use the occasion of her maybe texting me.
I wanted to just use this as an opportunity to draw a line under this chapter, a part of my healing. Maybe also a bit for her, who knows. Maybe some day she will do better, and it might make this part of her life a less bad of a memory. But that's not really the point.
I know her well enough to know that if she will text me (definitely no call) it will be a ver simple "happy birthday."
I wanted to send her back something I have "planned" in advance. I want it to sound detached, but civil and warm. It would be awesome if you could check it for potential tripwires I am missing.
Her immediate reaction to it... .I don't care. If I get only one nasty or somehow inapropriate text from her... .she's blocked immediately.
How about:
"Thank you! Hope you are doing well. Know that I hold no grudge against you and that I wish you the very best for your future. You'll always have a special place in my memory. Take care. X"