I would just ditch this one and start from scratch. In the beginning you should make all adjustments from "body" rather than from separate zones. Looks like you hit it with an old "knucklecracker" pose. I've got brand new pose sets that still do this. Or, Edit>Restore>element for each knuckle and messed up part. The thing that blows this theory is the rip in her neck. If your into detective work then start by looking at Left collar parameter box. It should read 0.000 all the way down.