That's a weird one because she clearly had a fair bit of experience with NH mountains. I have climbed none but I've heard plenty of times that you climb Washington prepared to spend the night in a blizzard even on the nicest summer day. Now even if you think that's overkill, going up that light in the winter seems insane. I second (or third, or whatever) that she should have had a PLB. Say what you will, but the new iPhone 14 / and this T-Mobile/Starlkink tech (if it happens...) will save the lives of people like this (but is certainly not a replacement for dedicated satellite devices, at least not yet).