User blog comment:SurlyGrey/Is, Juliette a Grimm?/@comment-1509826-20120417193916

Okay I going to give another example, Of Mouse and Men, it clearly shows she isn't a grimm, she didn't understand why they where watching her, and she was physically surprised when she watched the mother, quickly run her children in. Also they didn't change, and as when we see them change, its only grimms perception (or there revealing there true form) so unless she is a Grimm, whos grimm from the generation before hasn't yet died, she's human.