Because it was Amy and she'd call him captain man if she wanted, thank you very much. Nor did she doubt that Helena would probably kick his ass if he actually made a pass at Oswin and it wasn't just Oswin's normal flirting that she did with everyone. Amy flirted, too, maybe not to the extent Oswin did but it didn't mean it was necessarily bad. So long as the partner understood.
Nodding as he said he'd leave them alone, Amy started towards the TARDIS. She could invite him in. But things were a mess and given she didn't know if Oswin was actually avoiding him or was just at work, probably best to leave it there.
"See you in classes."
With that, the Scottish woman entered the TARDIS and headed to the room she should be sharing with Rory but wasn't because of the Seal and it's jerk decision to take her husband away. Letting out a sigh once in there, Amy just looked around, her hand on the door frame.
"Rory, come back to me."
Because she could move on as best she could, it didn't change the fact she'd keep hoping her husband would return.