Homophobic family

I (20) had to come out to my mum when my dad died a couple of months ago because I was with my gf when it happened. My mum has just been more and more homophobic towards me since then and it’s really affecting me, I feel so unsafe in my own home. She’s even telling me I’m destroying my dad’s memory, embarrasing him and disappointing him by being gay when he wasn’t even homophobic. He probably knew I was gay and loved all my friends who he knew were gay. I can’t move out right now because rent is so expensive. How can I deal with this?