She's trying. Ella Prentiss-Jareau. Adopted daugher of Jennifer Jareau and Emily Prentiss. Only trying to make it through life being a sixteen year old with parents who are never home. Trying to be little miss perfect.
Emily is granted the opportunity to adopt Carrie after her entire family was murdered. Emily is adjusting to mom life with a teenager while Carrie is adjusting to being in Washington DC. But, she finds joy in poking fun of Emily about her crush on JJ. Carrie made it her mission to repay Emily back by setting her up with JJ, whatever the cost.