The only part that bothers me is that Ansom attacked by surprise. I can't think of ANY TBS game, cardboard or computer, that allows for surprise reinforcements. Except an RTS. Which this is NOT.
So, I assume artistic license is at play in allowing a surprise attack.
Reinforcements per se don't bug me. I've seen reinforcement rules in TBS games that allow adjacent hexes to provide support after a specified number of tactical combat rounds. Maybe something like that happened, even though Ansom would be reinforcing from two or three hexes away. Ansom arrived as a reinforcement on a map edge, conveniently enough right at the same map edge Jillian was fighting Manpower.
A little too convenient, but I've seen stranger things happen with cardboard bitz in hand.