Building Memories after a Death
When Fiona and Finn's father, a psychologist, is killed in a car accident, the children and their mother (who is getting a degree in something "between philosophy, dance and making brushed wool dolls for preschoolers) have a hard time dealing with everything. One of the father's patients, a young man named Thomas, asks if he can call every Monday at 6:50 to give Finn a pleasant memory of his father. Also trying to help is Finn's neighbor, Luke, who suggests that they visit shelter dogs to read to them. Eventually, the family adopts a dog, Jenny. This helps a little, and the family slowly creates a new version of normal for themselves.
There's no shortage of middle grade literature dealing with the death of one or both parents, but this is a gentle book to address the younger end of the spectrum which might not be ready for longer books like Erica S. All Three Stooges, Stevens' The Heart and Mind of Frances Pauley or Gephart's Death by Toilet Paper.