What would you do?

SeeYouNextTuesday • Single atheist badass career Mom. I say it like it is because I'm too old to play games and I don’t have time for fluff. 😘
You find out that your Grandfather died. The funeral has passed. Your estranged father chose not to call you or your siblings and tell you. The funeral was in the same city. Your father lives one mile away. 
What do you do? Do you confront your father who will absolutely blame you for not knowing better? Let it go and deal with your grief alone? How do you cope with the anger that you were denied the opportunity to say goodbye to a loved one?