That was just adorable! You've captured Susan's voice so well, especially the sarcasm e.g. "Thank you, Lieutenant Commander Obvious".
And her totally going brain-dead out of lust for Delenn in exactly the same way as John clearly had was hilarious and perfect.

I normally only ship John/Delenn (or even John/Delenn/Jeff), but John/Delenn/Susan sounds brilliant in this case!