Since she's only been eating every two weeks on a hopper (which just makes me ill, BTW), I would start by bumping her to one adult mouse every 7 days for a month or so. At that point, you can increase to every 4-5 days if it isn't causing her to skip meals. With her being hungry, right now would be a good time to try to switch to weanling/pup rats, if you so desire.