[As exciting as it was when Edward stripped, that is over with now. She should be talking more about magic, but as Thomasin said, it is a fact of life for Jeanne, made all the more obvious by their unexplained teleportation. She stands behind her podium with her hands on its surface.]

I believe we have thoroughly eliminated the theory that Luz left any kind of mark by physically contacting her killer. We must consider another theory. We know that the culprit held the knife at a certain height relative to Luz's body. We know that a shoe similar to Luz's made a footprint. These facts are completely different from "a person similar to Luz in size did those things". We also know that the culprit had a very significant amount of time to set the scene - Luz was dead for over an hour, and the culprit went about deeply burying the knife in the flowerpot completely unseen. How did such a meticulous person leave a bloody footprint that was also totally separate from the enormous scattering of paper?

There is an extremely harmonious explanation that comes to mind. The killer removed Luz's shoes to create the footprint because it would benefit them for us to believe. This explanation becomes even more harmonious if we believe that it was easier for the killer to pull off the shoes than to manipulate their laces and put them back on. All the more so if the killer had a tiny body that could dodge Luz's grasp.

[Jeanne smiles sadly and looks at the nearby Adorabat.]

And does this not bring to mind a person chomping at the bit to fight any of our monstrous enemies? A person used to magic sources that can be shattered in a single strike? A person who knows how to gather evidence?