Grief is a waste of time. This is a lesson to learn to prepare for anyone's death as death is a fact of life. Accept anyone will not be here tomorrow then the next time it happens you will be unaffected and you will be able to continue on with your life. Preparing ahead of time means there is no damage you need to heal from.

Believing you have to be sad and have an emotional response when something that is a certainty just wastes your time and energy.

We as humans must work to evolve past this nonsense.