Rather than informing folks that an empty chamber can kill them,
maybe outlining conditions where a chambered round can discharge
is better for letting folks make decisions.
Assuming a gun is not defective, the basic question is what are the chances
of an accidental-discharge before carry...
Make sure she can rack the slide on a bad day.
Rule - 1 for a semi for use by a frail person:
Have them rack the slide at least five times quickly.
I bought a lowly KT p-32, then found out my wife
could not rack it reliably, even when warm and dry.
It now has a 1/16" rod through the slide...