Dexter77

I don't think your wife needs to get consultation from a doctor.

As you have said, the scale doesn't always tell the true picture. I would use a big mirror instead of the scale but if you recognize that she's tightened up, the reason for not losing so many pounds is the result of muscle gains. So you wife has probably lost much more in body fat but also gained some pounds of muscle. The result is somewhat less total weight loss but a much better appearance. This is good.

If your wife wants to get more toned up or lose some more bodyfat, I would perform more weight training, probably in a gym where more machines, dumbbells, and barbells would be available. Weight training 3 times a week in combination with cardio (treadmill, bike, steps, elliptical) could lead to even more results.

With regards to your wife's diet, I would eat more wholesome foods. I know that protein/carb bars are sometimes more convinient but I personally prefer using these products as supplements only or when they are the only possibility. Chicken, fish, lean beef, egg whites, low-fat cottage cheese are pretty good protein sources, and your wife could eat complex carbs (brown rice, oatmeal, vegetables, potato) instead of the bars. Some healthy fats (olive, flaxseed, fish) would also help. And of course a whey protein shake with dextrose tablets post-workout.