And upon Arthur's return to her place at the lost battlefield at Camlenn, she weeps heavily for her loss and believes herself unworthy, stating that she was never meant to become king. This is where Arthur's canonpoint will be taken, at a time when she is beyond recompense herself and believes herself to be unworthy. She still believes she must redeem herself for the sake of her people and fight for the grail.

It's a shame for her, honestly, as she is not completely to blame. Lancelot says of her again in a post-death short,

"One of the knights left the castle for good, saying the king did not understand how others felt. I believe those words were what triggered my madness. Who was the one unable to understand? Did he not know she loved her people until the end, even as it isolated her people in Camelot? Who really was the one who nobody loved, from beginning to end?"

In this and a prior assessment from Arthur's dearest companion we learn that though Arthur struggled to understand the feelings of others, she loved her people regardless of any fault and loved them to the point it isolated her. In her selflessness she lost herself, becoming less than human and more of a tool, doing all she could for everyone else and taking nothing for herself. This brings about her isolated end at Camlann, and a selflessness that becomes selfishness at the end of the fourth grail war. By forfeiting any blame from any of her people and taking it all upon herself, she brings the almost frenzied pain she experiences after losing the grail war.