Not sure why you've measured her at 8 1/2 heads tall... her heel is clearly on the floor at 7 heads tall, and you can see from the concept that she's got a somewhat short and petite build. But you're sculpting her at 8 1/2 heads tall and it's looking reeeeally weird.
Because that's the BACK foot. It goes into the background. The right leg is exactly on the same plane as the rest of the body, and it sits at 8 1/2 heads tall. ((Not the OP, just had to comment))