"Nobody had any clue," said Melissa, who became visibly upset talking about the mom-of-four's condition
. "We've seen her all season long, you know? During the whole days of dress rehearsal and show days and Tuesdays and you talk to her and she's fine. She's bubbly, she's got... There was nothing about her that made anybody go, 'I wonder what's going on with Brooke? I wonder if she's feeling okay.'"