Not necessarily, she could just be different levels of thought. The basic Collective instant says "Assimilate now?" the Queen analysis the situation and decides yes or no.
There has to be something driving the collective, they force billions of minds into it against their will, on it's own it'd self destruct very quickly.
The Borg were never what we like to think about them, they just appeared that way because we knew nothing of them. Hell, for all we know the Queen is the collective wills of the original Borg, the ones that started on this mission.