The former tournament winner in Melbourne has only had her serve broken once in the competition so far and admitted that she has stuck to the same routine for the past week in an effort to stay in top form.
She told reporters: "It's all experience I go through routines that work for me.
"I go with the flow of routines. I go to the same restaurants where I'm familiar with the food. Maybe all of us have a little bit of that in us."
"I'm just so glad to be playing well and in the semi-finals again."