Hi there ~
Thank you for your question. I appreciate that you ask about the process of weight loss
. If your wife is eating right and is also exercising she is doing everything that is necessary to lose weight. However, the pattern of weight loss is that you first usually increase your weight a little due to increased appetite after exercise then your metabolism
kicks in making you lose weight. She may be at the point where she is going to lose weight hereafter if she continues to do what she is doing. I think this is going to be helpful if she continues the diet and exercise regimen. I hope this helps.
Take care and have a lovely day!