Over the course of several days, between naps and games with friends, Mace will methodically assemble whatever she thinks is important at the time. She will work to that single-minded goal, then celebrate with the others when it's complete, only to disappear and gather up the materials again.
She is focused on the functional rather than the pretty and will build with whatever materials she has available, while Wick follows behind her and adds decoration.
Mace and Wick sometimes butt heads on things, usually due to Wick's attempts to make something look good ruining the purpose of the object and requiring repairs, but Mace is all around friendly with everyone.