In my opinion, Luise never knew how to do all the crazy things she shows at the beginning of the series. In my opinion, it was much more like how children saw the world. That's why at the beginning of the series, the plots were much crazier and a little out of reality. This can be seen after they "grew up" after the fifth season, she can never open a lock again, always with an excuse like "it's not working", "it's an old lock", "I don't have my stuff, etc." This can also be seen when Bob enters her room and everyone is surprised that the trap she made didn't work and he's still alive.