It's safe to say that, if I was given a poll (pleasenodon't) choosing between the importance of snappy dialogue and strong narrative, I would always vote for dialogue. Stories like this prove that I am a biased nincompoop who is really only a dialogue supporter because I've haven't written a good bit of narrative since 2001.
Keeping to narrative was an excellent decision. We know LT dialogue by heart. What we don't know is the in between, and the descriptions here work to develop the story and romance in a stronger, more enveloping way than quoting game dialogue for nth time.
That day was month's ago and somehow she had moved on.
No apostrophe in "months." That's the one edit I'm desperate for.
The dock fight was great, as Bex said, a realistic approach in describing a fight with vampires, and I appreciated the scene of ground-bursting horror in Ch. 10. The identity of the corpse wasn't a surprise once you set up the flute, but the bonus points come from having some actual macabre in the story and no romanticized villains or monsters.
Jaheira's suicide. Well. I want to squeal and protest the hanging, yet with a critical eye, I can see exactly why it works in parallel to the prologue, and I am a sucker for structures like that.
Good job, Mr. Squeaker.