She wasn't in chemo, and it was 5 days before that she informed the crew. Up to that point she was saying how excited she was for the tour, which she obviously wasn't.
She was on chemo medication, not to be confused with radiation. The tour was never supposed to have been BOOKED until the disease went into REMISSION! She's made many of these statements in her blogs! Do you know much about the disease?
Sometimes it takes MONTHS to go into remission and sometimes it's within 4 weeks of taking the medication.
I'm sure she was excited to see the fans. But how would you feel if you were just diagnosed with a disease, thrown on medication and sent on the road?
I think it's just too much for one person. Someone should have stopped it before it happened. Someone dropped the ball. She may have been trying to work up the strength to go so she was staying excited for tour. I don't know. She cares for her fans too much to just NOT go. She must have been really sick.
That's what I think.