Conversation so far:
Did Janis Joplin preform at WoodStock?
Janis Joplin appeared at Woodstock starting at approximately 2:00 a.m., on Sunday, August 17, 1969.
Was Janis Joplin performance at woodstock a success?
Janis Joplin wasn't at her best, due to the long delay, and to the amount of booze and heroin she'd consumed. But even Janis on an off-night was incredible.
Why did Janis Joplin blame peggy Caserta for her performance at woodstock?
Janis Joplin was unhappy with her performance.
What was Janis Joplin's relationship with peggy Caserta?
Janis Joplin had an on-again-off-again romantic relationship with Peggy Caserta.

Question: How did she feel about performing at WoodStock?
Self-contained rewrite: How did Janis Joplin feel about performing at WoodStock?