Do I really hate my sister? Is this normal with siblings?

I'm the middle child of my family with my sister being the eldest and my little brother being the youngest; me and my sister grew up in the Philippines and my little brother was born here in the US. Growing up in the Philippines, with Chinese-Filipino family, I learned that I must respect my elders no matter what and all of these traditions and beliefs have just been ingrained in my mind and actions early on in life, such as following orders when told as well. Even back in the Philippines, my sister did take advantage of that little piece of our culture and always bossed me around and never seemed to get into trouble with the now trivial things such as her stealing my toys. But now we are older and have a younger sibling. Even though she is only a year older than me (16-17) those ideas are still part of me and while she had lost them, I feel like she knows that that culture is still very much in me. And now I am so pissed at myself for not being able to do anything or stand up for myself. She has completely changed and have even started disrespecting my parents and just being completely ungrateful for everything that they have done for us and it's just making me so, I don't know, pissed and tired of her. Being the middle child, I feel like I have to be the one that always has to be so damn perfect for my parents to make up for my sister messing up all the time and my little brother, being young, stressing them out. I feel like my parents have also given up on her and so they are pushing me more. For everything that she does, I'm the one that seems to get punished and yelled at and I'm just so useless because while I just want all the screaming and yelling to stop, I can't say anything. My sister would be one that would either just walk away when they do try to yell at her or just say "Yeah, I know," call up a friend and just leave the house for a few hours. This then leaves me to not only be the one to get yelled at but the one that has to listen to my parent complain about her and how she's so disrespectful. She always talk back and yet when her friend are around she acts so nice towards me and my little brother, which I have come to find quite sickening. When she's pissed, she takes it out on me too. She's also one that always makes my little brother cry, then either apologizes, and hugs him, or ignore him and make fun of him even more (he's 5 and she's 17!) She also makes comments to him about how he's "gross" I mean, really, that's no good for his self esteem. When I try to take him away from her, she also says that I'm just babying him. It's come to the point where I just try to avoid her as much as possible and simply not talk to her anymore. It's come to the point where when she says one thing to me, one little comment, just completely pisses me and I have to take a break in either my room or bathroom in order to calm down. I'm the type that keeps my feeling to herself because I feel really bad if what I tell others would make them feel bad too. I mean, isn't it bad that I just hate her so much that whatever she says, it's just close to brining me to tears because just hearing her voice being directed at me makes me so mad. Or am I the one that has the issue here. I mean, she's done worst thing that I haven't mentioned here but she has. My parents gives her loopholes and she doesn't even take it. I mean, she had to collage offers at all and she's lucky to be even graduating since she's gone downhill. Is this normal for me, for her, for all of us. I mean, we don't have a dysfunctional family or anything but she just pisses me off so badly that I just want to hurt her so bad, just for her to see how much pain she's put my parent through. I mean, is this normal, or am I having issues, or what?