Board Thread:General Grimm Discussion/@comment-26516813-20151217010617/@comment-25875828-20170130191927

Diana and Kelly could only be about 10 months apart. And this is where the show time line is off. using the dates shown in the show Diana would have to be almost three which would make Kelly two. Yet the show portrays Kelly as less then a year old.

But just like no one says anything about Diana aging fast. They also do not say anything about Kelly's lack of aging.