This is a video of all three of them out on the deck. It's nothing special, except to see how they interact. Maggie does not take any crap from the boys. She also likes to dig, and eat snow/ice, which turned her into a peeing machine.
We still limit the time Denny and Maggie are together, but I'm not afraid for her anymore. Of course they still can't be left alone together, she's just too small, not that she'd know it! It's clear that she's the Boss. I'd never thought that would happen. She has spunk!