Not odd at all if she was in the mountains of NM. And it would definitely be de rigueur to carry one in your pack.
The apparel choice does concern me, though, from what I can see. In this environment (actually most hiking environments), you'd want to be in synthetics or wool exclusively, from the baselayers on up. The exception would be a puffy jacket (you want to be careful if it's down, though). Cotton can be a death trap, because it chills you by putting a layer of water (i.e. sweat) against your skin.
So, if poor MM has been out there for as long as she seems to have been, this apparel choice would be very worrisome.
Expert safety tip: it's currently become popular for women to wear leggings for hiking. If that is your choice, make SURE you are wearing synthetic leggings, and not cotton ones! They should be robust enough to survive a skinned knee, too. And NEVER jeans.