this is very good, BUT the transition from Stage 2 to stage 3 is WAY more subtle than this video implies, it can often take up to 2 years for an abuser to show the controlling side,
In contrast to the speed that is showing in state 1 the slow ramping up of control can take a very long time and be so slow and by such tiny increments that the victim doesn't realise until its too late and they have lost the confidence to walk away.
Often the sharpest shift in behaviour will be when the couple are engaged, move in, marry , get PG or have a child. any of these can trigger the escallation of control.