If anyone can help me out with this it would be great.
My girlfriend fenced competitively for two years and in that time the muscles in her lunging leg became much larger than those in her other leg. Since she's stopped fencing the different is no less apparent. Are their any exercises that would allow her to get both legs to match or just to decrease the mass of the one leg?
Working both legs equally should even it out eventually as long as you maintain proper form on both legs, look for excercises that work one leg at a time so the stronger leg doesnt do all the work, lunges could work and she probably has pretty good form on those.