I agree. My matches vary greatly in terms of how well I do, and re-watching old match vids shows me that when I lose a lot of times it's just because I wasn't moving properly, or was impatient against characters I should have been more cautious around. Simply running away poorly against some characters gets me destroyed.
Mu needs to control the pace of a match. She needs to keep momentum in her favor, as it's hard for her to play defensive for very long.