Shock

After Tim

Was found guilty of sexual assault in a court of law ...
After all the physical evidence and the testimony of two witnesses was enough to convict him
The parking lot cameras
And so on ...

Someone who is ultra competitive and has to win is never going to report that his wife was raped, or permit her to report it. Too much loss of face.

All's Well That Ends Wet

It's a happy ending when she can't help enjoying it.

After Tim...

hiked back down to his car, he reached for his keys in his pocket, and found a small piece of paper that he didn't remember putting there. Unfolding it, he read "Thanks for the rescue. Cecilia," followed by a series of digits which could only be a phone number,

Another reason to enjoy hiking. :)

Ultra competitive eh...?

"Someone who is ultra competitive and has to win is never going to report that his wife was raped, or permit her to report it. Too much loss of face."
Let us accept your premise, though why the wife would agree is unclear...
In your case: after Tim get's back and gets the license plate, he gets his pistol and when the moment is right shoots the man; alternatively some other fascinating manner of death. Or, ....
I am sorry--the extreme nature of the lesson calls forth an equally extreme response... Maybe that is what chapter 2 is about... Tit for tat?