Unfortunately, I didn't enjoy the framing device for this story, it took long enough for Sheridan and Delenn to get together so I'm not interested in seeing this sort of artificial road-block being thrown up now. Anna was an interesting road-block because her interference was based on the past emotions and decisions of the characters, whereas this is some Minbari speciesists that have come from nowhere and are trying to dictate what Delenn should do with her life. Darned socialists!![]()
Not quite out of nowhere. This wasn't just some random racist pressure group, it's her clan and her family and by tradition (Minbari have lots of those) they do have a say on the union of their members. I think it's already been pretty well established that Minbari elders are an interfering bunch.

I hope that she does tell him one day and that this thread isn't left hanging, it would be far more interesting to watch Sheridan's reaction to Delenn's role in the near-extermination of his species than Lennier's.
I don't think it's a spoiler to say that she never does tell him, at least not on screen. Either way it's never directly touched on again, aside from the odd mention of her being there at the first contact.
Getting back to the movies: I think it's now officially "safe" to watch 'In the Beginning' from this point on. The movie includes snippets of footage from this show as well as a few others that gave a glimpse as the war ('Revelations', 'And the Sky Full of Stars' & 'A Late Delivery from Avalon' if memory serves.) I don't think there's anything that would spoil what you have yet to view.