Skipping meals here and there is semi normal for the breed.
Tika and Ripley both do it from time to time, and at one point I believe Tika was on a week long hunger strike that would restart biweekly it seemed.
As long as water intake is normal, and they aren't lethargic I wouldn't worry all that much. I would keep on eye on her though and make sure she isn't thinning out. If you start to see the ribs or she just wants to lay around all day and not run around that's when I would bring her in for a check up.
How much are you feeding on a normal day where she eats it all exactly? It may help to know
Hope her appetite kicks back in soon.
Is this about the cake problem? What's the matter with you mathematicians, cake is never a problem. - Professor Lazlo