I have a 60g hatchling from mid-August, who is eating small adult mice. Her siblings are on a medium/large medium adult mouse once per week, and they are about 155-160g.

So don't worry, they can take something bigger than a hopper, especially after they've had 3-4 meals.

Makes me wonder why your female regurgitated. Just upping the prey size from a hopper to a small mouse wouldn't do that unless there is an underlying problem such as stress/internal parasites, something like that.