I agree that she looks most like a silky coat. The cottony coats are normally very thick. When out in the sunlight the silky coat will reflect light as Mardelin explained. The cotton coat will sometimes have almost a brownish cast to it and look more dull. You have the green eye shine for a silky coat, the thinner coat, it seems to lay down instead of puffing up -- all signs of silk. She does look a little sparse in the coat department, not too unusual for a year old -- it should thicken up some over the next 6 months. But make sure she has a premium food, and you might want to take q look at some supplements like: Missing Link, Seameal, or make your own with the famous Peanut Butter Balls recipe for "growing hair on a doorknob:"
Lowchens of Australia ~ Growing hair on a doorknob!