[Elvish, huh? That's...well, that makes sense. She was supposed to pass for a weird elf when they got home, so it isn't a stretch to think that Lup would be teaching her their language. But when she mentions that they've run into a roadblock with materials, Taako rolls his eyes and then gestures to the walls around them.]

You got all the writing space you need here.

And?

[He gestures widely to himself.]

I'm a transmutation specialist, dingus. Why not just ask me to transmute some charcoal or ink or whatever for writing?