In reply to littleclare: I have size 4 feet and Black Diamond Seracs fit my boots really well. They're a tiny bit heavier, as they're stainless steel (no rusting!) but it's really not noticeable (as well as having small feet, I don't weigh much, so carrying extra weight can be an issue). I know very little about crampons though, so don't know if they'd be suitable for what your daughter needs...