Yeah I noticed that too but I think what that means is that she still thought he was in the house and so she wasn't quite out of danger. She then realized that he had left while she started the call and begins to calm down "Yeah, I don't know." Maybe having regrets calling 911 (even though she absolutely should have).
At the point Von is leaving the house he already knows he's f'd.
Something tells me these two are not a match made in heaven and long for this world.
I joke around a lot but this is a serious situation because it reminds me a bit of OJ and Nicole Brown. Putting your hands on a woman is serious *****. Because it's an indicator of a situation that can escalate to unthinkable levels.
I'm not a "Von-Miller-must-be-cut-immediately-because-I-hate-violence-against-women-and-this-is-about-me-and-my-feelings!" virtue signaler. It's just a very sad thing.