After 6 yrs my adult cannot accept the loss of their dad

we were married 45 yrs. We had 3 children all married at his death. One son accused me of killing his dad because I could not save him , he had a massive heart attack at home at the age of 64. Our kids never came around much, even when their dad would ask for help , they had their own agendas. Since his death, our children who made promises to dad that I would never want for anything, basically abandoned me. I am their real mom.My daughter still grieves she’s 45, and claims her new dog is her dad sent back to protect her. I am accused of everything under the sun because after 6 yrs I am dating. You would think I had leprosy. I am not invited over, shunned by all 3 kids

 

Sorry to hear about your husband and what is happening with your kids.