Help me fund my uni and help my sister

I left my abusive religious mother's house at 17 a few months ago, I live at my elder half sister's (26yo) place. She lived a similar abuse when she was younger and left to live with her father at 14 because she came out as a lesbian and our mother absolutely lost it.

My grandmother was supposed to fund my studies, but after I left my mother said she wouldn't fund it anymore to punish me for running away. Essentially punishing me with my future to make a point.

I need money for uni, my sister overworks herself, sometimes 7 days a week and it's a very physically exhausting job. The end of the months are tight, and she also pays for my therapy because I have been mentally ill for years, and struggling with suicidal ideation and self harm from past trauma, most of it caused by my mother.

Studies have been one of the only ways for me to hold onto life when I had nothing but myself, and I don't know what I would do if I can't go to uni.

I actually need more than 5k € for all the years of law uni, but this is a test and will serve to pay my first two years. The rest will go to my sister as a thank you and support for taking me in.