Oh god, Korra wants to be her friend sooooooo bad. But Sabe's civility with Amon just makes Korra want to throttle Amon in front of her so he does something evil (as if) so she can see Korra's point. Normally hitting sense into people would be Korra's thing, but Sabriel's nice so she's more than happy to put that frustration on Amon.

But if he isn't there, I think Korra would actually enjoy doing stuff with Sabriel and asking her nooby questions about Charter Magic.