As 4track said, get a sheath to fit a folder she likes.
I will offer this suggestion, which I have been very happy with, the Spyderco Assist. https://www.spyderco.com/catal...tails.php?product=63
Easy opening with heavy gloves, blunt tip and serrate edge allows for sliding under a seat belt or clothing to cut away either, glass breaker (I've never used).
I carry mine behind my IFAK on my PC. It also carries well in a pocket. Years ago I saw the Coast Guard had them on their ditch vests.