Jack's Sensei and Doberman

Just re-edited final chapters, Jacks Martial Arts instructor has links to previous characters important to the plot, each character however minor should have a purpose in the story.
I was going to loose the dog out of the plot but she became important in protecting Jack's mum from some of his old enemies.

Sonja the Doberman

When writing try to keep in mind that each character in your story assumes that they have the leading role.