Rosie is Tommy's girlfriend in the bar (the one who says, "Tommy's so jealous, he'd kill me"). The gal with him at the Copa (who talked about Sammy Davis Jr.) wasn't named.
Q. What did Henry tell Karen he did for a living when she asked him at the Copa?
(Note to Goodfella: Mr. Tony did send champagne, but the performer who sent champagne was Bobby Vinton.)