The ending conversation was also a very sweet moment between Mel and Lynn that is starting to show the reality of the situation regarding the surgery. Lynn's a bubbly and compassionate individual, but deep down she knows the severity of her condition and the possible outcome, and it probably makes her a little insecure with believing whether she's "good enough" for Mel despite Mel making it clear over and over that she loves Lynn from the bottom of her heart (something she thought she'd never be able to do again). Lynn probably feels Mel could go and love anyone else in the world, but chooses to stay with her despite being so close to death...and that's what makes their relationship so beautiful.
I completely agree. The conversation between Mel and Lynn in this chapter is very important and a great part of what makes the story-telling in Pulse so engaging. The conversation is completely real in relation to real life and shows profound depth of character. It reminds the reader that this is a love story in a world of different relationships.
Personally, I think the relationship between Mel and Lynn is so well written that it transcends the current story arc. It's a good sign when the reader would be just as happy reading about their everyday adventures (date, grocery store, anything, etc.). You want to know ever more about the characters. LOL In television, that's when a series easily becomes a candidate for syndication.