So your wife has lost fat, gained muscle and is considering giving up on the process?
Did I hear that correctly?
I get it that her expectations may not have been met by the process, but I would encourage her to stop and think about what she was expecting in the first place. Did she have a specific goal in mind, or just some vague idea of an ideal body that she believed this process would produce?
Speaking for myself, I'd gladly take slow steady progress that builds muscle and sheds fat over some rush to a certain weight on the scale that leaves her in a metabolically worse state than when she started. That has more or less been the path I walked this year. I got a lot stronger, gained a few pounds on the scale yet have a better body shape than when I started. Was that progress optimal? Not at all. I've got plenty of room to improve. But it is still progress and giving up has not entered my mind, and it shouldn't enter your wife's mind either.
Here are some questions I'd encourage her to ponder.
Does she enjoy "boot camp"?
Does she intend on making weight training a permanent part of her life or simply a means to reach an end?
Has she taken an honest look at her diet to identify easy ways to improve? I'm talking soda, alcohol, sugary snacks, potato chips, i.e. "junk food"?
In all likelihood, she has to improve in the same place I do, which is taking more control over what she is putting into her body and exercising more discipline to consistently execute what she needs to do. In other words, she has to improve her diet.
She is already sailing in the right direction. Scuttling the ship is not necessary, but some adjustments will definitely help keep her on course.
Also forget about the body type bullshit. Lift heavy, eat well and good things will continue to follow.