It's not about her inputs going unacknowledged. It's about the blatant and rude disrespect she was being treated with by her sisters friends. To top it off she brought it up to her sister and instead of her giving a rats ass about how she was being treated, her sister then kicked her to the curb to please her asshole friends. You can say no to someone's suggestions without being a literal piece of shit and treating others like trash. Weddings are not an exception. Learn to be a halfway decent person. It's not that hard.

I'm sorry, but... Did you even read the FML?

Naw, sister is trash and so is your comment

I read the FML and I also reasoned though the most likely reasons that sister would have apparently behaved so “rudely” to OP. The real problem is between sister and OP. The most likely explanation is that OP was getting caught up in the excitement of her sister’s wedding and plans to a degree where she was becoming pushy. That would explain the scenario. I am a guy, not a gal. But one thing I know is that many little girls grow up planning in their minds the one big social event that they are going to be “queen” of - Their (first) wedding. The parents of the bride (mostly the mom) get a say in the events and planning because most often they are paying for much of the event (she who pays the piper calls the tune). But sisters and brothers do not get to plan the wedding - They are usually there purely for “decoration” and to show unity in the family. I am not saying that “Bridezilla” behavior is nice or should be emulated. I am just saying that there are certain days and events in our personal calendars in which one person is the center of attention. If others, no matter how well intended, try to “steal the show” they will be disrespected as a natural reaction. The best you can do in this case is to remember who’s day it is and either take part of it, or stay out of it, or just do the minimum asked of you. The “fever” will pass and even a “Bridezilla” will eventually return to normal.

crazy bitch alert

I agree about not going to the wedding but DONT talk to your sister like this. It's immature, manipulative, and somewhat toxic. You can tell her you're not interested in the wedding because of how badly you were treated by her and her friends without going all "woe is me" "I love you so now you need to feel guilty and give me what I want" and "I'll only go if I'm a part of the important stuff". At the end of the day the bigger deal is how you were treated like trash by someone who's supposed to give a damn; not that you're no longer a part of some snooty wedding party. She can be held accountable without playing mind games.

OP has a right to speak up for herself and call out her sister's disrespectful behaviour. It's not "mind games" to tell it like it is.

I will put my close friends ahead of my family every single day of the week. One group of the two has always looked out for me. It's not my family.