Cuddy's already there, and apparently she was so outraged when she heard that Cameron approved House's total body irradiation that she jumped right off the horse she was jockeying and went straight to PPTH. Cameron explains that she said yes because she knew House wanted her to say no and was trying to test her. Cuddy accuses Cameron of getting "cute" and warns her not to engage House or play games with him. Cameron says she's doing the job Cuddy stupidly hired her to do. With that, House barges in and notes that Cuddy left her baby in the hallway for the nurses to look after, which I'm sure they're just thrilled about. But they'll probably be better mothers to the baby than Cuddy, and that includes Evil Nurse Brenda if she still works at PPTH, which she probably doesn't. House immediately figures out that Cuddy came back to work so she wouldn't have to be around her baby, which she's starting to realize was a big mistake. Cameron looks horrified as she realizes from the expression on Cuddy's face that House is right. It turns out that Wilson totally told on Cuddy to House, which is such a dick move. The matter is so serious that Cameron starts using Cuddy's first name. Either that, or she's been reading those how to succeed in business books again that say to use people's first names like she did back in Season One. Cuddy waves her off, chalking this up to having a bad day. House says Wilson was worried about Cuddy (so worried that he betrayed her trust and basically set her up for many insults about what a bad mother she is? I hope my friends never get that worried about me), but he shouldn't be. No one should be. Nothing's official, so Cuddy can give the baby back tomorrow if she wants, which would be better for Rachel than growing up with a mother who doesn't care. Cuddy holds back tears and says she'll go drop the baby off at the pound. She leaves, and Cameron asks House what he wants in her best angry schoolmarm voice.
Next thing we know, House exits Cudderon's office and says Cameron approved the ice bath, but first they have to draw some of Sara's blood and see if it clumps in the cold. The Cottages enjoy this very much, and rub it in that Cameron must have only approved the total body irradiation because she knew House was trying to test her.
When Kumar comes in to draw the blood, Sara has some visitors -- her student, Johnny, and his mother. Kumar apparently thinks that special ed kids can't be embarrassed and says that Johnny must have a crush on his teacher. Johnny's mother says that Johnny was a non-verbal autistic until he had Sara as a teacher. Now, when he's around her, he talks and makes eye contact, "like a regular kid," Mom says. Whatever. A regular kid could hold glitter without fucking up some girl's drawing. Apparently, Johnny's been less communicative since Sara got sick, so Mom says she "had" to bring him in. Wow, how selfish. Mom could at least pretend that the visit is as much for Sara's benefit as it is for her son's. I don't think she even brought a Get Well Soon card with her.