And for a very simple reason.
While Rima is with us, so long as we are on her business, we are protected from above.

The angels, senor, will watch over us by day and night.

What need of weapons, then, except to procure food ?" "Why should not the angels provide us with food also ?" said I.
"No, no, that is a different thing," he returned.

"That is a small and low thing, a necessity common to all creatures, which all know how to meet.

You would not expect an angel to drive away a cloud of mosquitoes, or to remove a bush-tick from your person.