User blog comment:DragonsHaveMoustaches/Did Morgana see Merlin using magic in 'Another's Sorrow'?/@comment-5519601-20121030053854

Even if she did she most likely wouldn't be able to remember.

I mean, she did hit her head hard and fall unconcsious and when you fall unconcsious, theres only a 1/10 chance that you'll remember what happened.