Yeah dats wat i thought to. That can be the only explanation, but then she started having flashbacks about Dev aswell then so im a bit confused??
she saw some foggy flashbacks of her incomplete marriage with dev but in that flashback she couldn't see dev's face during the marriage..and when that lady in the train told her that her husband is leaving her once again,then she thought that mayb the guy who rescued her from falling off the train is only her husband