My question: How long do I leave the f/t mouse in the tank?

The situation;

My hubs has been very adamant about not feeding the snakes in their tanks. Well hubs is out on pad (he works with nat gas/fracking co) and will be gone a few more days and the kids filled the bin I usually use to feed the snakes up with toys. (I bleach out the bin before & after every feeding) so i said screw it and put the f/t mice in the tanks. Li didn't hesitate, she is now a plump and happy snake.

However Livia has circled hers, went to a corner, dove in her water dish, circled again and is now staring at the mouse. It's dim in the room, the kids are all in bed. Should I just leave it till morning?