I'm 15, i have an older sister (32) and a niece (12), they both live with my parents and I. My sister yells at my parents about their choices if it doesn't involve her. My parents bought her a car (to get a job), they are having her teeth fixed (she doesn't have insurance so they pay full price, $900), they bought her a brand new phone (iPhone 6s costs $325 to open a Verizon account) they also pay all her bills, car insurance, gas, oil changes, phone bill, etc. Recently my parents went out and bought a new SUV. They paid in cash since the payments would be too high. (btw they have the money to do all of this but thats besides the point) They also went out and got me a new laptop for school since i'm online schooled and mine wasn't working well, but they also bought themselves a desktop. Both of my parents work really hard for their money and i don't see anything wrong with their spending, plus its none of business. But for some reason my sister feels the need to involve herself in their finances and throws everything up in their faces. For example my dad, my mom and i went out to dinner a few weeks ago without my sister and niece and when we were there she called in the middle of our dinner, screaming at my parents that they didn't even invite her and she yelled "the 15 year old just got a $1500 computer and you can't even take us to dinner" We're always going out with her and her kid to dinner and shopping and blah blah. Does anyone see anything wrong with how she acts?