My mother was a teenager when she got pregnant with me. I was raised by my grandmother, who just passed away (20/01/2020), without any help from my mother (was not even living with us or taking care of my grandmother. There has never been healthy relations between my mother and the both of us (my gran and I). THe only people we had for us were my gran's extended family, and my gran's church ladies. My gran did not get a chance to get a will, but had said the same people that were there for her (myself, her brothers and sisters, and church) should be the ones to handle her funeral. She had also indicated that she would like to leave her RDP house with me. On my gran's death evening, we informed my mother, and she did not respond, same as when she was in hospital. The following morning we drove to her house in Lawley, and were told she wasn't home. We contacted her, and she arranged to meet us at Bara Taxi Rank, where we went, waited for her, called her, and her phone was off the whole time, until we gave up. We did not hear from her again, and she did not answer any call attempts to her. We therefore carried on with funeral arrangements. 2 days later (today, Saturday 23 January 2020), I was out with my aunt running errands, I got a call from home, stating that my mother was at the house, with my stepfather, and started a fight with my uncles.As we were rushing home by taxi, suddenly the taxi stopped and I noticed my mother and stepfather at the taxi door, demanding to talk to me. I alighted the taxi, and my mother and stepfather started hurling verbal abuse and threats at me, demanding that I give them gran's ID and Death Certificate, to which I responded I don't have these on me. they then threatened me some more, and told me they'll be going to the police.Later in the evening, at about 21h00, my mother and stepfather were back, basnging the gates, swearing and threatening me all over again, mentioning she will actually take her mother's house and throw me out.I urgently need advice, as I would like to respect my gran, who was the only mother to me, and have her funeral (on Wednesday 27 January) in peace. I truly fear my mother will disrupt everything, as it is what she's always done. Is here any help and/or advice I can get, please?