GM everyone. Reading on some SMS reports a couple of things come to mind
1. She is an EMT/Fire rescue professional. Maybe she was overconfident and saw the hike as less challenging that it really was (it is easy to underestimate the SNP conditions if you are an avid hiker). But also it got me thinking, being the fit athlete that she was, wouldn't she had a GPS/Smart health monitor with her? Even if only for her vitals while running/hiking? A lot of hardcore athlete/runners love this type of gadgets.
2. Her husband is with VSP. Maybe they had opposite shifts and they might not have been the kind of couple that talks during the day. I talk to my fiancé from 6 am until 12 midnight (we share EVERYTHING, emails, texts, phone calls etc). Some couples are not as communicative and just check when someone is obviously late etc. Maybe that is their case due to their professions?
3. Did she have an alarm system at home? That could tell LE when she left the house (or someone who had the code left the house). I would know something is wrong with my SO if say I can see in my alarm log someone entered my townhome at an odd hour (and they need the passcode anyway which only the 2 of us have).
JMO, of course.