When we see the ladies next, Arizona is in much better spirits and Callie passes along a hello from Mark and a report that he is still doing great. Arizona's surgery (the one that was part of Callie's new plan) is the next day and she's already trying to be a perfect patient. Callie then gets a page -- it turns out that today is the day she is doing the nerve graft on Derek. She's really nervous but Arizona tells her she is amazing and they get a little bit goopy and kiss before Callie goes off to save the magic hand of Dr. Shepherd.
A little while later Alex comes to the doorway with a piece of Chunky Stu's Hawaiian pizza for Arizona and reports that he is eating thanks to them but now that Stuart is okay, it's time for Alex to leave for Hopkins. When she says nothing he tells her a bit defiantly that he busted his ass to make sure everything in pediatrics is running smoothly so now he's done and can go. Cautiously, he walks over and puts the pizza on the table next to her bed as a peace offering and when she still says nothing, tells her that he's sorry this happened to her and that it made her hate him. He turns to leave, but just then alarms start to ring and Arizona starts to convulse.
And then we catch up to the scene from earlier, where he runs into Callie's OR to tell her that Arizona has septic shock and is crashing. Callie's eyes turn to saucers and she asks him everything he did. She's so panicked that she starts suggesting the same fixes over and over, and it doesn't matter anyway because Alex has tried everything and he finally bluntly tells Callie that she's dying. This snaps Callie back into some clarity and she immediately says that it's the leg. Alex agrees. She closes her eyes, takes some deep breaths, the music swells, and then she tells Alex to cut it off.