She was great!
She was in good strong voice and great humor--as Judy said, "Lorna likes the loud ones"--from "I Hear a Song Coming On" through to her clever rewrite of the "Born in a Trunk" sequence from Star Is Born, retooled as a way of telling her two children, Jesse and Vanessa, "How Grandma Got to Carnegie Hall."
The highlight, though, for me is the duet she does with a video clip of Judy (a la Natalie Cole and Nat) singing "I Can't Give You Anything but Love" and "Through the Years."