Bereavement occurs when the character has lost something or someone of vital importance. While it often follows a physical death, this sense of loss can also be the product of a divorce, being fired, having to give up on a dream, and other painful events that create a significant void in their life.

Slackness in the face
Having red or swollen eyes
Difficulty sleeping
Neglecting personal hygiene
Wearing or holding the clothing of the one who was lost
Wandering aimlessly, with little direction or purpose
Restlessness; needing to be busy (manically cleaning, tackling a neglected project, etc.)
Avoiding certain areas of the house that awaken raw memories
Refusing to go anywhere (or, alternatively, finding it hard to be alone at home)
Praying desperately
Talking aloud to the person who has passed
Attending religious services more frequently (or avoiding them)
Voicing regrets about missed opportunities or not doing more with the time they had
Rebuffing people's attempts to reach out to the character
Getting rid of (or clinging to) items that serve as reminders
Wanting to be with others who were also impacted by the loss
Avoiding (or visiting) people and places that remind the character of their loss
Drinking more than usual
Putting off managing the affairs of the deceased (if the bereavement has to do with someone's death)
Losing interest in activities that used to bring joy
Becoming obsessed with safety or health
Reaching out to estranged contacts (because the character recognizes how short life is)