The Evil Twin

So my brother lives in Hawaii and has a son that is 2. I haven't seen him in 6 years and he's getting married soon, so my mom told my very rich grandma that she didn't have the money to go, which is somewhat true.. My grandma of course is going to pay for my mom to go, well problem is, now she doesn't want to go alone so she's taking my twin brother. But not me. I have never once been on vacation or hardly even out of state! Im so mad! He is the bad kid who does drugs and is a super senior and Im the good kid with a job my own apartment at 18 and a 4.0 gpa. And she takes him!! I wasn't even invited which hurts the most... :( as if Michael, (one who lives in hawaii) isn't my brother too!!