So to fix Yumezora, Gomi will have to break the cycle of violence. Hard when the husband is bent on harming/killing them. Gomi could stop strangling Moyupi, take Yumezora's hand and just run away. To where? I don't know, the police I suppose, report what happened even if Gomi has to confess what he did. They could flee to another city or go to a village and hide, but they will never have the certainty of escaping Moyupi, he looks crazy enough to spend all his remaining life to chase after them.
And even then, how Yumezora would react if Gomi attempt to flee with her? She got wet when the comfortable violence cycle continues, but if Gomi actively goes against it, would she react negatively? Get the ick?
