Vindariel finishes his food and tries to speak to the Boggart in the other languages he speaks: Hallit, Skald and Elvish.
His psi crystal is not yet ready to use telepathy, so he tries one last time, very slowly and very carefully to describe that he is not here to hurt him.

One way or the other, Vindariel leaves again, noting in his book that he should come back when he has a way of communication with the Boggart.