This is a common corruption game caricature of submissives, another case of porn brain rot, but in reality it's pretty rare that a submissive is that close to that spineless. There are many examples of battered submissive women who finally snapped when someone touched or threatened to touch her child. And those are very dysfunctional people often with very severe psychological problems or substance abuse, too dysfunctional to serve in an army in any combat or technical role. It also contradicts her Mary Sue status in the army, though I get that's meant as character growth, but it's not a weird place to start.
Also, what reason does she have to trust her shitty husband? She can't really take his word that he only wants to avoid draft. Enrolling is a commitment for years and she can't keep track of what he's doing to their child. He either needs some really good stuff to prevent her from getting in the police or he must have a great way to avoid being tracked down without an opportunity to move abroad.
The ending sounds also pretty unsubtle. I'm not going to ask if there are really guys who masturbate when they stand on a ladder because I know the answer's just going to make me smash my head against a wall, so I'll just say that letting a cuckold die in an NTR game lays it on thick and letting him die in that manner lays it on really really thick.
Not gonna cancel you though.