Do 당신 think Elsa's will to protect Anna and her people during the night of the incident was strong enough to prevent her mind from snapping out of fear? 

I have a friend who's wondering whether 또는 not Elsa had Dissociative Identity Disorder, and I tried to give him an answer, but I failed. I'm trying to give a solid answer, but his 질문 are just mind-boggling and tiresome. I don;t want to leave him in the dust because he's my friend, but I can't help him alone...I need an answer.
Will 당신 please help me?