Devon (SPOILERS FOR EP09)

Am I crazy or that smile and behavior at the end with innie Mark was super weird. Super suspicious. So's shes with Lumon after all? That was definitely not normal behavior. Seems like she was Cobbel's right hand woman or something, I was really weirded out by how she acted in the last 10 seconds of Ep9. She's never really /that/ worried, never really /that/ caring, she's just... a tiny bit, the close enough amount. Is this a Truman Show situation of sorts, with Devon and Mark?