Sorry you had to go through that... I feel like many often forget that fathers day can be a tough day for some, and having fathers day stalls and card-making activities at school next to all your friends must have been so difficult.
It sounds like visiting your father's resting place and just talking to him has been a good and healing experience for you. I'm so happy that you've found a way to feel positive things like safety, peace, and calm, on a day that can often more easily bring sorrow.
Thank you for sharing that with us!