It's her ability as an artist to see possibility where others see a blank page and, by extension, to see victory where others see certain defeat that truly empowers her...
Courage, Strength, Hope
But Clary's a hero at heart- and that means she'll find a way to be the hero she needs to be, to look beyond the skills she doesn't have and draw on the skills she does have to ultimately save the day.
Courage, Faith, Inspiration