My Alice has bionic legs. All the animals are drying themself, so she do, wiping one of her legs. The project that I joined, requires that the artist follows the indications in the paragraph, but only them. All the other details are artist's choices. For example someone drew an astronaut Alice in fron of the Caterpillar.
it seems like you're apologizing. You're right asking, I should write more in descriptions. By the way this detail is not something with a deep explaination behind, I just felt to draw her like this, with these mechanical parts.