She'd prefer a more private goodbye anyway. The first one was awful enough to have Mickey and her Mum witness and they'd love her no matter what. This one is going to be worse.

"Okay," she nods then pauses, tugging her bottom lip through her teeth. This isn't a question she's ever had to ask in the TARDIS. "Your room or mine?"

She does want to see her room at least once before she has to leave. To make certain she didn't make it all up. To make certain it's still there. To make certain she hasn't been forgotten just because she's gone.