She is five feet, 3 inches, weighs 112lbs, she wears a size 6 on the top but a size 12 on the bottom. She doesn’t have a great sense of balance so she finds lunges challenging, and her knees tend to get painful after a couple of sessions of squats, lunges etc. Her fitness levels are not great either and I am cautious about getting her heart rate up with bike intervals. I am at loss on how to help her achieve her goals. Any suggestions?
As a Pilates Instructor some of the best exercises for the hips, both strength and to reduce inches are the Side Kick Series and Pilates Leg Circles.
I would modify the leg circles either from a bent knee position doing knee stirs or by wrapping a strap or stretch band around her foot and this would support the leg as she circles. You can see pictures and a description with modifications here:
Best to you!