Question/thought about last night's episode. Not sure if I watched correctly or made this up in my head (which is entirely possible), and if this was mentioned already, I apologize.
But, did Kate talk about the fact that she was the thinnest she had ever been right before Jack died? If so, that could explain her weight/issues with food to some degree. That coupled with what I thought was a 7 on her wrist/being dissatisfied trying on the 5 and it not fitting properly, never being happy with her current weight no matter what it was, etc.