His time in prison had given her space to heal. To heal from him, from his abuse. She’s had time to think about what’s best for herself and the baby. And what’s best is for her to get away from him.
But he won’t let her leave. They were married in the eyes of God — he said the vows, and so did she. As far as he’s concerned, that ring is never coming off. Never ever.
He left her no choice, no other way out. If he insists on holding on to their wedding vows, then hold on to hers she shall.
In sickness and in health. Till death do us part.