I need help

My boyfriend bought me my first ever flowers, so I said I would use the petals and put them in a vase, she took my flowers and put them in the garbage, when I asked her about them, She said threw them in the bin and I told her I wanted them. I was already crying because I do that when I’m mad. She started to kick the bin and swing her hands at me, calling people and telling them I’m crying over flowers, and if my boyfriend leaves me I will k*ll myself. Also she said she doesn’t give a $h*t about me and my boyfriend and she can’t wait for me to move out. Saying she doesn’t know where I’ll make it in life. I’m 17 by the way, jobs are really hard to find especially due to COVID. Also, I want to move out because she said she’s going to kill me and my dad said I’m using it as an excuse to move out,I just wish I could move out. My dad is on her side also so