Is it okay if I use this as a drawing reference/ tutorial? Not her actual drawing, just the correction part that you did (w/ the boxes & circles to show where/ how the pose should go)?
Sure that's fine. If the work I do can help people improve, then by all means. I just ask that if more than... 15% is used (aka if you can that there are major similarities, or that you think it is obvious enough) that I get credited for being a source/reference.