It's been eight days now since I made another trip to the Home Despot store and shelled out for more fencing materials, and then spent a fair bit of time reconstructing the dog pen's north fenceline.
And since then. there hasn't been one single Belle break. She hasn't gotten out once, even when I deliberately let her simmer out there just to see if she'd get mad enough to really try.
Call me optimistic, but I think that I've finally got her licked.