Washing Head

Since Margaret's head is removable, it gives her some advantages. One of them is that she can wash her head and her body separatly, without getting another wet. Becides that, she doesn't have to go to the shower, to wash her head, she only needs a sink. And, because she can actually SEE with her body, it's not trouble for her to pick a shampoo and do other things you need eyes for.