Apparently this is the wording, which, hands up, I was not aware was the case now:

When the ball is kicked, the defending goalkeeper must have at least part of one foot touching, in line with, or behind, the goal line.

So, I guess she could have argued for the "in line with" part. I honestly can't keep up it seems like the rules change constantly - last I knew I was certain you had to be actually touching the line.

EDIT:

EDIT 2:

So, that is confusing tbh!