Thank you for the question. Assuming you are in good health and the mitral valve prolapse is asymptomatic you should be able to undergo tummy tuck surgery without problems. Best to undergo a medical workup of her for your own peace of mind. Your plastic surgeon would also appreciate a note from your primary care physician or cardiologist. Best wishes.
A mitral valve prolapse is very common and often does not cause a problem. You will need a full workup by your doctor and a cardiologist, but it is very likely that you can get a tummy tuck. Make sure to choose a board certified plastic surgeon!