At least she actually remembered the words, although she seems to insert the dramatic lead-in right into the middle of the song. I can even forgive her for using Roz / Lisa's key. It's a hint of what might have been, too late for what could be.
I think this clip is (at least) a couple of years old. She did some small performances at colleges a few years ago, and this clip seems like it was from that time.
Her Rose probably would been akin to Tyne Daly's - incredibly forceful in person, and unimpressive on a recording. It's a shame it never happened.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson