They simply are. Accept help from those who offer it. Understanding and support can make difficult moments easier. Ask for help when you need it. Relatives and friends want to help but often don't know quite what to do until you make your needs known to them.
Professional help is also available.
Be kind and patient with yourself. Some days will be more difficult than others. Get plenty of rest, eat right and exercise. Seek support from your victim advocate. Be aware of increased grief responses associated with holidays, the anniversary of your loved one's death, birthdays, etc.