@reiko Hi there :)
Mhh, well judging from their personalities, I would say that Leah wouldn't get on with her. So even if they are team mates, I think they'd be somewhat enemies. As Leah's trying to help Casper...and Alex siding more with King, it would give her a hard job trying to keep an eye on Alex and King and their 'mess' so to speak.
But when it comes to team work, Leah would work with her as they're Team Mates...trying to put their differences aside for the task to be done so they can succeed.