AITA for telling my sister how I feel

Okay so yesterday me(22f) my sister(32f) and our girlfriends got together out of town. In the evening I and my friend M(22f) started making chicken bbq outside and it was ready after ~ 3 hours. Mostly the bbq is done in ~1 hour but as it was a chicken it was cooking much longer and I also left it longer cause I didn't want the chicken to be uncooked and us ending up getting salmonella or some other infection. For some context - I and my sister don't get pretty much along and I had a previous experience with my friends when we were out of the city and we were making food, keeping the home tidy, etc while my sister was having the best time of her life and procrastinating and just coming over to us when the food was ready and leaving after. So yesterday when the chicken was finally ready, we sat down to eat and my sister started complaining that the chicken is kinda weird (she’s always weird about the food and always sniffs it and complains about it), and said that it would've been better and faster if we made the sausages instead of the chicken. Honestly, I got really upset as I and M are the only people out of the group who know how to bbq, and we spent so much time cooking it and making sure that everything is cooked perfectly to get complaints afterward. So I was sitting there upset when my sister asked me if I was mad and I said yes, then she started to aggressively ask WHAT? And I said that I’d like to talk to her in private instead in front of our friends. So our friend got out of the room and I told my sister that it hurt me that she started complaining about the food to which she answered that I’m wrong, that she did nothing wrong but - POINTED OUT THE OBVIOUS and didn’t mean to hurt my feelings and I am the weird one who’s too sensitive and should’ve taken it better. I said okay, I get that you didn’t intend to hurt my feelings but I want you to understand that it did and accept it and mentioned that the timing for saying those things wasn’t right. So as always, we ended up fighting because she was being to stubborn to hear me out, and I got really angry and told her that she should be thankful that there was something to eat and next time she’ll be making it by herself. So the thing is I am always trying to see my wrongdoings but sometimes it gets out of control and I end up self-blaming myself for something where I’m not the “blameworthy” person.

So Reddit - am I the asshole?