At a year old, two or three adult mice are more than enough once a week. I would wait until 7 days from her last meal, then offer her a mouse. Once she eats that one and has re-adjusted her jaws, offer a second. If she takes that one, once it's gone and she's actively looking again, try a third. She may or may not take it.

Do not give her more than three. Even if she acts like she'll take another. Watch her for a week, and if she has no problems, you can stick to the two or three mice once a week.

Gale