Flashback: April looks back at what her life used to be and how much she misses it. Her life is completely different now and the flashback helps intensify it.
External Conflict: April's father is getting tracked down by a hit-man by the name of Mike Vamp. Of course, these two people are not friends in any way, shape, or form, causing an external conflict.
Characterization: Mike Vamp follows the family everywhere. He will not stop until he kills the father. Aprils describes him as, "Hungry for blood." That shows how determined Vamp is. Further showing the characterization.