I find Jenn to be a great talent, and think she does indeed exude a lot of warmth on stage.
Twogaab2- I saw her in "Goodtime Charley" as well and she was wonderful. She brought personality and spunk to her character, and had the audience in the palm of her hands.
She was also one of the brighter spots of "Full Monty" at Papermill right now.
Like someone else suggested, try catching her at Birdland or another like venue. (She always seems to be performing somewhere so it shouldn't be that difficult to catch her!)
Marie: Don't be in such a hurry about that pretty little chippy in Frisco.
Tony: Eh, she's a no chip!