It is now reported she has anti seizure meds nearby at all times.

Her health may be more serious that any one on the outside is aware.

Diazepam
Sedative
It can treat anxiety, muscle spasms, and seizures.

Controlled substance
Can cause paranoid or suicidal ideation and impair memory, judgment, and coordination. Combining with other substances, particularly alcohol, can slow breathing and possibly lead to death.

Should she withdraw?

She is on camera losing her complete train of thought at a rally.

She was caught on camera being held up on both sides to climb stairs

Why is she (and Bill) risking her life?