Should I stay at my grandma's for the night?

Yeah. My mom got drunk, chased me up stairs, I held her out of the door. She pushed the door back my back got slit from backing into my fish tank she uppercutted me in the nose, punched me in the stomach, threw me onto my bed, hammered me in the nose and my forhead, her shitty wedding ring cut my forehead, then afterwards I went down stairs called the cops, they came and did nothing. I told my middle school, they contacted child services and I lived with my dad for 2 months.... That horrible Sunday night when I, for the very first time got beaten. NEVER EVER happening again