Hmm, I'll guess 8 times in the "Broody Buster" (Love the name, by the way!).
And because it's Derp, I'll guess it took her 2 days to break for the last time.
Why 2 days? I imagine Derp may have been sitting in the Broody Buster, and forgot what she was doing, and wanted to go say hi to Grill.
THIS IS FUNNY!!! OH, hai grill!