Why does michelle mccool always wok on her oppenent's leg since she turned heel?

Since Mitchell Mccool turned heel,i noticed that she always works on the leg of her oppenent.This has caused her to be so repetitive and boring.In almost every match, she'll simply damage her oppenent's leg by doing the same moves week by week. It seems like moves such as chop blocks, elbow drop to the leg, knee drop to the leg, knee stomp, etc have become her trademark moves.