Family Fortunes

So my mother’s father, who I had never met, passed away about 6 month ago in England. Since he died without leaving a will, his estate (which isn’t really worth much) is being distributed equally between his 5 kids. Since my mom is no longer alive, we (my two sisters and I) need to provide all this documentation. I’m against it all. Call me crazy but I did not know him in life and I do not want his money in death.