Dive Deep into Creativity: Discover, Share, Inspire
Being German-American, I don't much like the stereotype of Germans as excessively regimented and organized. So I prefer to believe that Liesl's extensive lists and spreadsheets are actually a carefully-crafted manipulation technique, designed to leverage that stereotype into a way to demoralize any opposition to her plans. It's her version of "I can do this all day."
Liesl isn't, actually, an organization freak. If you pay close attention, she turns out to be an adept at retaining facts and knowledge, extrapolating from observational data, and determining optimal solutions. She's a theorycrafter and a logician.
Except for her own personal goal, of course. She's not entirely sane about that, but understandably so.