Meredith and Christina both have challenging surgeries, which we see at the same time. Frankly, I hate echo in my own phone, let alone in one of the shows I'm watching, maybe they tried to add something with that but I just found it annoying. Dr. Thomas died during surgery, which was kind of sad, but also necessary for Christina to return to Seattle Grace. Meredith finally admits that Lexie's dead. What I am wondering, did Lexie and Meredith not have another sister? and where is she in all this?