The same episode also did show her in a session when she still had her powers. She was giving rote, generic advice to a crew member that was obviously not impressed.
The whole episode was her learning to do her job. Which is odd, the empathic power should have been a tool, not just something she sat around with.
In conclusion, Troi is an underwhelming therapist, and that’s concerning since she’s on the flagship of the fleet.