Dylan O'Brien's little sister

So, for introduce myself, my name is Sherlyn O'Brien, and yes, you're right, the famous Dylan O'Brien's little step sister. I'm a 13 year old living in L.A. and I'm starting 8th grade next year. I can't say I'm the perfect daughter cause I like to get in trouble with my friends. It's been like 4 months I don't see my big brother, who is 22 years old. He's busy with his actor career he even didn't come to my birthday party. He didn't even call. I'm living with my mum, Allison and my step dad, Anthony. Even I'm 13 years old, they ground me when I get in trouble. The thing is I didn't know what was going to happen on my last day of school of 7th grade. If you want to know, read my story!