Here are links to some helpful resources:
A Temporary Gift: Reflections on Love, Loss and Healing – A book written by Asmaa Hussein after losing her husband. Very effective reminders about trusting Allah and seeing the light even in immense pain.
Children of Jannah – Provides support, education and counselling to Muslim parents and families who have lost a child.
Reclaim your Heart – A book by Yasmin Mogahed with helpful reminders about journeying through difficulties and healing the heart.