It’s not that she’s lazy, but rather quite impatient with her tasks. And she’s a perfectionist on top of everything, insisting on having the smallest of things just right before she’ll accept it.
Or maybe she gives up too easily, although with her beauty, it seems that others always give up before she can, so even when she wants someone to say no to her they don’t. Others can’t be bothered with going beyond the surface of her skin, so she can’t be bothered with what she does.
So it’s with a certain sort of catharsis that someone finally tells her no even after saying yes, and she’s never felt better in her entire life.