Sometimes life in unfair

This past couple of weeks have been super hard for me and my family. About 2 weeks ago my dad had surgery on his foot and now he's stuck inside and can't walk. Then this past Tuesday my uncle passed away of cancer. The problem I've been having is that my mom thinks I'm not grieving right. I cried at first but then I tried to accept it and move on and she thinks I'm not upset i guess. She's been really mean to me, my dad, and sister these pass few weeks and now she's saying I'm horrible for not being more upset or stopping everything in my life. I still have school and work and continue to follow my FB30 and she's mad all the time. Any tips on how I can make her see I'm upset or deal with her?