I've spoken with Katie over Twitter (somewhat) extensively in the past, and she seems like she has a good head on her shoulders and that her heart is in the right place.
Now, whereas Star Wars is concerned, neither of those apply, and it's because she doesn't see our perspective. Which is understandable. She did, after all, grow up with the man who created it. Even if George never changed the movies, her perspective would be different than ours.
Let's play a game. Imagine that your father invented one of the biggest pop culture/cinematic/toy/everything franchises in the world, and then was constantly hounded by strangers from all over the world because he changed a few things about it. Wouldn't you also defend your father vitriolically? He's your dad, after all. I assume he was a good father to her. I assume he treated her well and that she grew up in a loving household. I assume she grew up, like most kids do, idolizing her parents, and that, being George Lucas' daughter, that the changes he made make sense to her because what he says goes, and she never saw the movies as they were in 1977, I'm sure. Of course she's going to defend her family when a bunch of strangers attack them for what is, to her, no reason.
Attacking her or her father through her is silly. She has no clue where we're coming from, even less than George himself. She has no idea the impact the OT had on all of us when we first saw it, because she never experienced it. The only thing that attacking her serves is to do is polarize the next generation of LucasFilm against our cause. Instead of possibly being nice and communicating to her how things used to be and making her go "Daddy... why did you change Star Wars?" she has always seen this side of the Star Wars fandom as angry, profanity-spewing, violent, hate-machines who have it in for her and her family.
Now, that doesn't excuse her flipping out and confronting violence with more violence, but it might help us understand her point of view on the matter. Is she close minded about it? Yes, she is. But when you're the child of the Pope, you're damn right you're going to be Catholic. When people attack you for your beliefs, you're damn right it only serves to strengthen your resolve. All she's ever experienced with Star Wars is misguided, irrational hate for no reason, so it's really no surprise to me when she comes out swinging against people who have hated her family for her entire life. Instead of trying to maybe reach her, maybe make her think about the situation rationally and communicate our grievances calmly and intelligently, maybe she would have come to wonder why her father didn't release the movies as they were originally.
Instead we have slowly, over the years, created someone who will one day take over LucasFilm and remember how the OT Preservationists treated her family as she was growing up, and be even less likely to release the films we love in any form than George is now.
I could be wrong, yes. Maybe she would be like this anyway, no matter how nice we were as she was growing up. But I can guarantee you that the relationship between LucasFilm and the OT Preservationists has only suffered, and will only continue to suffer because of it.