Im tired of her playing favorites?

My grandma does the same thing. She likes my three girl cousins (age 18, 15 and 10) because they do all the so called normal things. like hanging out with friends, staying up late and having boyfriends. Plus they are all outgoing and not shy. Now my brother and I get treated like crap. I am 17 a senior and way smarter than my 3 cousins combined but I don't stay out late or have a boyfriend so suddenly I'm worth nothing and my poor brother who is slightly autistic and the only boy in the family hardly gets any attention. I have many examples too but as for advice, just deal with it and ignore her, take care of your siblings and cousins who are not like Karlee. Oh and the three cousins of mine are selfish and bratty and always scream for whatever they want, I ask politely and get shunned. life is great isn't it?