Erin Pizzey is just objectively wrong anyway.
From a literature review of actual evidence on domestic violence:
'When abuse becomes a more regular occurrence, women develop coping strategies to try to endure it. Many describe simply living from day to day, trying to enjoy the good times and forget about the bad (Kelly et al 1999).
They often preserve hope for relationship improvement by trying to find rational explanations for abuse (including self-blame), and endeavouring to become what their partner wants by changing their behaviour. This often involves submerging aspects of self, such as emotional responses, performing unwanted tasks, or relinquishing valued aspects of identity e.g. job, family ties or cultural membership'
That's what normally happens. That's what the script has so far been portraying.
It's just the bonkers stabby denouement that isn't 'normal'.