(written from a Production point of view)
Hana Rebecca Hatae (born 15 July 1988; age 27), from Tarzana, California, is the actress who played Molly O'Brien in the Star Trek: The Next Generation sixth season episode "Rascals" and in Star Trek: Deep Space Nine.
Besides her work on Star Trek, Hatae was also featured in an episode of the comedy series Family Matters in 1998 entitled "Polkapalooza", where she played "Steve Urkel #3".
In 2010, Hatae appeared on the Fox television show Kitchen Nightmares in an episode involving her family's sushi restaurant Sushi-ko. As of that airing, she was working as a hostess and waitress. Her brother, mother, and father also appeared in that episode. Their family restaurant closed in August 2009. 
She has since reprised her role as Molly in an episode of the fan series Star Trek Renegades entitled "The Requiem". She also appears as Nurse Yagi in 5th Passenger.