In reply to garth56820:
2 main options that i know of for Refuge d'Argentiere - from the mid station hiking up past the glacier seracs, then onto the glacier / moraine & up the ladders (which i think is where you mean by the ladders), traverse across the cliffs and then an easy climb back onto the glacier to cross to the hut. OR head up top bin of Grand Montets, walk down the glacier (about 25degrees?) trying to bypass some crevasses as best as possible, scrambling down the cliffs, and then the same easy climb onto the glacier to traverse across to the hut.
Once you are off the cliffs the glacier is pretty compact but more choppy then mer de glace, and a bit of crevasse avoidance navigation but nothing i'd usually rope up for. If you take the route down from top of GM you'd definitely want to rope up and there are some pretty big crevasses opening up there, plus i imagine still some hidden ones! I wouldn't take a beginner down that way. Taking the route up from mid station is pretty tiring and has some areas that are a little exposed with loose rock, bouldery terrain, etc.
I wouldn't say either of these are simple and would definitely think twice about taking someone with little experience / confidence. Other options are Albert Premier (simplest option and even though it's a short hike there's plenty of options to go on after the hut for a beginner), Couvercle (though if she wouldn't like the ladders at Arg then this may not be a good idea!), tete rousse, refuge plan glacier, etc.
http://www.chamonet.com/huts/
this link is useful for details!