Sara Ramirez   "It's very painful, it's very difficult and it's
really heart-wrenching what happens," Sara Ramirez, who plays
Callie, tells  On Thursday's episode, viewers will flash back to
retrace the time between the rescue and the present. Though
Arizona (Jessica Capshaw) specifically instructed Callie to save
her leg, that didn't happen. Arizona is not only left distraught
about her future, but also that her wife didn't keep her
promise. Ramirez says that because of this, she's not sure how
the couple can move on.   "Because they got married, because
they have a child, certainly from Callie's perspective she's
just trying to survive, she's trying to do what's right, [but]
I'm really worried for them. I'm genuinely concerned about
what's going to happen, how things are going to get better — if
they're going to get better."  5 major spoilers from the Grey's
Anatomy Season 9 trailer  In the interview below, Ramirez warns
viewers tuning into Thursday's episode: "Keep your Kleenex boxes
nearby." Plus: Ramirez