Board Thread:General Discussion/@comment-24979796-20140527195418/@comment-24386552-20140619223713

Or because her mother made her swore to never tell anyone. She was very surprised by the fact her father had met someone else and had 2 daughters. She was angry that he supported Lexie instead of her which lead up to the dislike she initially had for Lexie. But maybe she doesn't know the name of her half-sister even if she knew her mother had another one. She would also be surprised by the fact Margaret is chief of cardio. But eventually figure out that Margaret was more committed to surgery plus graduated earlier than Meredith. Having a great surgical advantage over her as well.