MY GRANDMA JUST DIED AND IM STARTING TO HALLUCINATE AND HEAR THINGS......IS THIS NORMAL?!?!?!?!?

ok so my 85 year old grandmother just died on friday (my dads mom), and she died of emphizema and liver failure, and my dad picked me up from school on friday early and told me she only had like 3 hours to live.....so i get to the hospital with my sisters (16 and 27) and i see like literally 30 people there crying and my mom was crying so much and she cant stop, even now shes crying, and so i went to my grandma (we were REALLY close) and i said i love you and she said "my grandkids" (my mom kept saying we better go to college and do something with our lives because we were her life) and then she kept repeating over and over again "mommy mommy, im dying im dying" and so she died on friday (in our religion its a HUGE blessing, were jewish) and so now me and my mom cant stop crying, my dads dissappearing at odd hours of the day and night, and me and my sister (16) are hallucinating and hearing voices, and were WAY to afraid to sleep alone at night, or take a shower or go to the bathroom, or look in a mirror or at a window, or walk outside alone....................is this normal?