General

Do I have the right to be mad at my mother?

Alright, so basically yesterday, I asked my mother if I could go see my grandfather, who was dying of lung cancer. She said I couldn't for some reason, because he apparently was in a lot of pain. I asked her if I could see him today, in the evening, and she said yes. Unfortunately, my grandfather passed away this afternoon before I could get to see him one last time. I mean, I understood that my grandfather was dying, and that he was in pain, and she and I both knew that he would soon pass away, so I wanted to see him as often as I could before I would never see him again. I understand that it's not her fault, and that she didn't know it'd happen today, but we both knew that it could happen at any moment. Do you think I have the right to be upset with her?