My thoughts too are with Mimi. Mimi's a friend from the days she used to play at the folk club I ran in Montreal in the '70s and '80s.
I was told of her illness back in January by a mutual friend but was asked to be discreet about it. I don't think she'd gone public yet. But there were stories about her in the San Francisco papers around the time of the Bread & Roses benefit in March.
And just for the record, she was using the name "Fariña" during the time she worked with Tom Jans. To my knowledge, she has not used "Baez" since she married Richard.