She was prepared for sleeping on the hill. Probably hoping to get into the refuge because it would be a nicer place to be than a tent. There's space to stand up whilst getting changed, shelter for cooking, possibly a fireplace and best of all you don't need to pack up and carry a wet tent in the morning. It would be a nice bonus if there was an open winter room, and not a life-or-death disaster if there wasn't.
What makes you say that? The dossier says she was carrying a paper map and I've not seen anything else which suggests otherwise?
She had also downloaded all the maps onto her phone. I think she was much more capable, experienced and responsible than people are giving her credit for. She had done at least one (summer) version of the UK Mountain Leadership training and had a lot of days on the hill. She had very good equipment and looking at a photo of her oatmeal, chia, raison and cinnamon porridge, I reckon she had a good supply of food with her, just not the kind of food that would impress someone carrying tuna and baked potatoes

She would also have been unlikely to have been willing to share special vegan diet stuff that was hard to come by, and would have kept quiet about that. And if I was being charged more than the marked price for chia seeds, I’d ask about it at the till too. Wouldn’t most people?
She was someone who did a lot of personal emotional, psychological and spiritual work and communicated that. To me that’s the sign of someone very resilient and emotionally intelligent. Not someone about to put everyone who loves her through hell.
I’m sorry someone encouraged her up the Port de la Glère, it may have been just too dangerous at that time of year without winter climbing gear. But 35 years ago, in late December, I also went solo walking up to the tops of the Spanish Pyrenees with an ice axe I’d never actually used and mere “heel studs’. (The snow was too wet for crampons) I managed to cross an unexpected frozen stream that would have sent a wiser woman back down.
She had wanted boots, not shoes. She had done her research and identified the ones she wanted, but she could only find them in the shoe version (many of which come in “high top” versions, so they are a compromise between a shoe and a boot.) Availability of woman’s boots is much less that of men’s so I can quite see her dilemma. I had to find and settle for Italian-made men’s ones, which were narrower than most.
She may not have slipped. She may have ruptured a tendon, had a stress fracture, an aneurysm, appendicitis, a severe migraine. A small thing can have big consequences when you are on your own. Mobile reception is not static, it can vary according to the weather and time of day. Her death was a tragedy and I hope she died peacefully in the end. She was doing something she loved. I hope Dan and her relatives find peace in finding her at least.