She lost because Trump campaigned his ass off during the last part of the campaign in the right states that he needed. She was physically unable to do that. Could you imagine a coughing fit or seizure that would have her falling off the stage? Not a good graphic.
For a 73 year old, Trump has incredible energy.
BTW, this time around, the one in danger of being offed would be Cankles. If she pulled her usual shenanigans, the far left would strangle her.