Nope she hasn't skipped it.
If her follicles were the size of marbles(20mm) 3-4 weeks ago she still has a ways to go.
Just keep pairing her until you see an Ovy. Once you see it you'll realize how hard they are to miss.

Females don't always just stay on the cool side or bowl wrapping while they develop/build.
They will move back and forth adjusting their temp to promote the proper follicular growth.