The Theory of Christina's presence

The theory of Christina's presence states that:

"The arrivability of Funtypeople in any Funty outing is dependent on the arrivability of fellow funty Christina,

as due to her leaving to a faraway country, her presence is therefore to be treasured, and henceforth the turnup will be better than expected."

Simply put,
if she's around, people will arrive.
if she's not, people will smoke out.

Really what.