Could be Tania, but I know TGS doesn't list it and I didn't check to see if Tomatofest does so how would that variety get in a pack of commercial Stupice seeds from either place?
Your link went to a blank page so here's another one that goes to your description of Geranium Kiss and some pictures:
http://tatianastomatobase.com/wiki/Geranium_Kiss
And if Alan only listed it last year, well I forgot which year but I know recent, LOL, I doubt that many have even grown it.
I Googled it and the only place is comes up is at your website.