Commentary:
If you're thinking Margrethe doesn't answer Lubo's question from panel 1 because she couldn't read his mouth, then you'd be correct! Of course, Lubo does not know she's deaf, so he wouldn't be figuring out why she's giving him the silent treatment.
This also means that I don't have to canonically this question about her power. Speaking of which, yes, she can also contort her body with this skeleton power. This power I have decided to call Skeletal Clay. The boys are probably a bit grossed out about it, especially Lubo.
Batuu: Ha! Tygo sure pissed her off, now he's gonna get it! x3