Well, duh! Nobody's saying that's not Wood's intention or it's all a big mistake. That's what makes it jarring because in the films no such emotional turmoil is suggested on the part of Leia with regards to Luke. It's weird for two reasons: because it's out of character for her re: the films, and because we know what comes next so it's safer to play down that aspect of their relationship in any other media. I haven't read any of the media that's set in between the OT films, but I think it's a safe bet that any romantic feelings aren't discussed in detail for the simple reason that we know they're twins and it's a bit creepy.