She was one of Tonys "side projects"- a stewardess for Icelandic Air. I'm not sure if she would qualify as a goomah.
She's in few episodes - the party in NY when Carmine Sr. leaves early just as the girls arrive, the dinner scene when she explains the meaning of "watching your Ps & Qs" and one or two others. Tall, blonde and easy going - at least that's what I thought with her limited scenes.
I agree Gabriella would have been hot in her younger days and I assume this would come with a time-machine too! I also like her attitude - she's very supportive. At Adriannas bachelorette she talks about making cheese melts for Sil, in another scene with Carmela the subject of goomahs comes up and she seems to accept it and when the lady giving the speech at church criticized the Mob she was the one who confronted Fr. Antintolo.