I think she was in the process of changing clothes when he confronted her. I've thought about it a lot and I don't think he "dressed her"..........I think he dumped her in what she hadn't managed to remove yet (if you will).
I don't think he dressed her, either, but I also don't think that she was "missing" any clothing, either. After all, running shorts don't look at all like bermudas. They are pretty darn skimpy.