Regarding busting quotes, there's a lot of dialogue in the game that was either cut or simply bugged (for example, Bryce's "Hopkins you don't belong here, get out!" he shouts during fights was meant to be played during Weed Killer, though there is also dialogue that's simply difficult to trigger such as "tattle" lines), so it could be any number of things. It's been so long since I've actually played that I can't even remember if I'd had that dialogue trigger or not.
Can't help with your first inquiry since I'm not a modder, sorry; I just wanted to give some insight about the dialogue since it used to be a big interest for me.
