Except one thing you must always do is tell people where you are going, what you are going and when you are (exactly) expected back. Because it only takes a slip or a trip and suddenly you need rescuing.... It's utterly irresponsible to go hiking in the winter, at altitude with no companion and/or method of summoning aid, on trails which are essentially closed....Although this does point to a level of recklessness which, as others have suggested, may indicate her state of mind. She may not have been suicidal, but there would appear to be a lack of care for her own wellbeing.
But didn’t she do that from the top of Pic de Sauvegard? She phoned Dan then her parents to discuss her route and preparations we were told. I think that was the first place she had mobile phone coverage. We don’t have all the details of that, just some excerpts from texts with Dan. It seems to me she was doing the circular route anti-clockwise as Dan said, (and recommended by the person she met) with a little bit of leeway for changes depending on conditions. (Which is always the case). If she had deviated from the route communicated I think she would have endeavoured to let them know as soon as she had mobile reception again. I think all this uncertainty about her route is just spiralling speculation on our part, encouraged by SAR not being able to find her in initial searches and believing that she never reached that refuge on the French side an hour or so’s walk away and total confusion in the tabloids confusing the border with a path westwards along an imaginary ridge.