I am trying to get my wife into powerlifting. Her squat has gone up a lot since she started but her problem is everytime she gets all the way down and goes to come up her knees buckle in real bad. The same thing happens when she goes to deadlift. When she makes the first initial pull off of the floor her knees go in toward each other. What exercises should I have her do to correct this. It's never been a problem with me so I have no idea about it. Any help would be appreciated and thank you.