He was in Hawaii this year. I am sure he visited her then. How do we know one way or the other?
All we know is that he didn’t care that she might be attacked by a thug demanding money because the thug happened to be black and that he called her names and treated her terrible. She was the provider for the family and he had no respect for her. There will be a very special place in h@ll for people who treat their grandparents like that.