Exacting Query (2 psi). As an action, you target one creature you can communicate with via telepathy. The target must make an Intelligence saving throw. On a failed save, the target truthfully answers one question you ask it via telepathy. On a successful save, the target is unaffected, and you can’t use this ability on it again until you finish a long rest. A creature is immune to this ability if it is immune to being charmed.
This question is asked via telepathy, but is it answered via telepathy or vocally?
The Mystic's telepathy (gained at level 2) seems to be described as only operating one way (from the Mystic to any creature the Mystic can see within 120 feet). So does this imply that the answer to an Exacting Query would be vocal?