Can it be that Obsessive Compulsion Disorder is monolingual?

Let me clarify.
A woman I (superficially) know has, what I believe and what others have told me, OCD.
One way she expresses this is that she orders other people that she meets in the street to say certain words or sentences (like: “Say shoe, say shoe”).
However, she only orders her fellow Greeks to do this, she doesn’t so to tourists.
In the tourist season it can easy be 50/50 (Greeks vs tourists) on the streets.
So, is OCD monolingual /mono-nationality?
Is she faking it? I can’t imagine she does, but who knows?