Gabrielle is a holographic young woman in Picard's Paris cafe programme who has been stood up by her date, an echo of how Picard once abandoned Jenice.
Gabrielle appears in We'll Always Have Paris. She is one of the patrons generated when Picard recreates the Cafe des Artistes as it was twenty-two years earlier, on the day he failed to keep a rendezvous there.
Seated at a nearby table with a friend, she is upset because the man she was meant to meet has not arrived. Picard overhears the conversation and is drawn into it, suggesting gently that the absent man may simply have been afraid.
The exchange is the holodeck's reflection of his own past: he left Jenice waiting in the same cafe when he chose his Starfleet career over her. Gabrielle exists only within the programme and is not seen again.