It's up to you two to overcome the loss and to not lose each other in the process.
Parenting the siblings
The hole in your family that can't be replaced. It's on you to help the brothers and sisters carry on.
The world is out of order
When the natural progression of life and death is tossed asunder.
The social stigma
You couldn't prevent your child's death, nor the way people may view you as a result.
You, the parents, are also victims
The child who dies isn't the only victim.