I personally think that Veronica's reaction to Logan was in character for how out of character she generally is around him, which has remained consistent. She KNEW that he could influence her. He's pretty much the only person on the entire show who can. I mean, she is very much "eye for an eye," except when it comes to Logan. She forgave him an awful lot over the course of this season, and I think it's because she suspected a lot of the garbage going on at home for him. I found it interesting that she mentioned Aaron's abuse to Logan. Because when exactly did she find that out? Or figure it out anyway?

As for the letter, I think it's in the pen. Otherwise, why does it exist? I think Weevil knew it, and I think now that he didn't do anything to Logan at the bridge. Why Weevil was all "these rich kids think they can get away with anything," I'm not sure. Or maybe he's never been able to open the pen? lol

As for Duncan...ew. And that's all I'll say about that. But I do think they will explore a triangle next season. How can they not? As much as we despise them, writers LOVE them, and this one is too natural to avoid.