No perfectionist left behind

Went through my 6 year old daughters back pack with her. She has a test with a 84%, it was in sections so the first section was 100% and she didn't notice the overall score of 84 until I pulled it out. Lots of tears on her part. I went through the pages, she hadn't marked a single answer an entire page. Went too fast? Thought she was supposed to skip it? A boycott perhaps? Other than that only 2 wrong of all the other things she answered.... I know how I responded, I know how Tiger Mom would respond, I'm just asking my little world for what would you do?