... for "Transsexual: Yes - preOp" and "Height: Taller than 6'5" and didn't see Ccarmen or Carmen.  Really only one page of results.

I have a Tall Fetish myself.

But I DID see a lady who comes to San Jose occasionally who has intrigued me with her towering height, 6'7" and finally saw a review, a GOOD review!  So thanks for posting
(Except I just noticed what I think is a somewhat significant price bump ... maybe because she got a good review?)

It might be helpful for your detective hunt to share what area and which website you saw her past ads in.
If I add 6'3" to 6'5" to the search criteria, still no Ccarmen or Carmen to be seen, but there are 7 pages of results, 100 entries.

Good Luck