funeral

Just a questions poops out . My ex husb n i hv been divorced almost 2 years. He left us n hasnt been coming to see his child almost 3 years plus. The last he seen was when he was 1 years plus. Now my child is 5years old. The only person my child knows is my family, my ex mil n my ex sil. Even my ex fil never bother to see e child. My question is in e event if my ex mil or ex fil no longer around, is it a must to attend funerals? My child doesnt know anything n how will e child gonna react n behave? How is gonna impact on my child? If my ex husb force me that my child to attend? How? I hv sole custody n care n control . Ever since we divorced, not a birthday or seeing the child that matters to him? I need to know so i know watt to do in future. I hoped i can get gd advise from mom n dad outt here. Thank you.