They are going to have her doped up and ready. If there is a huge risk and potential of her having an medical issue then they would not let her go on stage and she will cancel it somehow, some way.
She’s not gonna make it...she’s going to ask for the questions and give a written response within 24 hours.
The alternatives are to let her collapse and end her campaign, or so wildly rig the rules and the stage as to give Trump fodder for weeks.