My advice, leave them in there. It might take a day, it might take a week, they'll spawn when they want to.
What I would do is leave her with him with the light off at night. There's a good chance that they'll spawn in the morning.
My views on aggression, some pairs are gentle, others make you want to take a pic of them and label it Abusive Relationship? If the female is able to swim away you don't have a problem.
Two reasons my red coppers won't spawn: the male beats the female until she can't move.
The way your pair is I would just leave them together and be patient.