You posted in the first thread I have read here in this forum. It was about why Jennifer Lien left. I remember that and so it must have been that episode.
Personally I liked it.(I wanted to choose a small font-size but I guess there is only one.)
Relativity? Season 5, E 23. I liked that too. Did you think it was somehow negative against Kes? That she wasn't mentioned perhaps? They did it on TNG mit Tasha Yar - to bring her back in an episode like this.
And Kes is the reason why you dislike "The gift"?
I wasn't always too fond of Kes. First, her boyfriend Neelix.

And then she was sometimes a bit too nice and I disliked the idea of the 7year lifespan. The Ocampa were a highly illocical construct.
She grew on me though and I would have voted for her to stay, not for Harry.

They should have done more with Kes. She sometimes had a good function but often not so much. Also the episode when they met the second caretaker. That was interesting. She was a bit too powerful in the end but I found her powers always interesting when they showed them.