Emerson...

loves her dad. (Eli does too) but Emerson seems to have a special fondness for Marcus. She searches for him in the rooms, she pretty much only laughs for her dad, when he walks into her line of sight her entire face lights up.

The funniest part is the days when Marcus works all day. Marcus will come home in the evening and feed the babies their bedtime bottle. Emerson, no matter how hungry she is, just smiles (milk running down her face), and 'talks' to Mark. It's almost as though she's telling him all about her day and the things she did.  Completely hysterical and makes her bottle take forever because she's just to happy and excited to finally see her dad after missing him all day.