I grabbed this through Kindle Unlimited. I tossed it in the DNF pile at 48%. Dialogue is atrocious and the two teenagers sound like they are right out of Leave It To Beaver... not modern day. The occasional chapters of the teenage son's 'diary' are very jarring and out of place.
The kicker for me was the scene where we are told that the uncle is going to teach the teenage boy to use a crossbow... then the entire description of the kid notching an arrow and the mechanics of firing the weapon are clearly for a standard bow... not a crossbow. The author needs to do a little more research.