Jenn, this stall may be a healing period for your body. Maybe there's some inflammation or other damage that's going to work itself out, before your body accepts weight loss. It sounds like you're doing everything right. Are you sprinting?
Why Sprinting is Essential | Mark's Daily Apple
I know you're in training for a half, but maybe the longer runs are sabotaging your weight loss efforts right now. I used to be a distance runner, a low-fat, oatmeal-for-bfast, skinless-chikn-boob-eatin' runner who could run well, but always had that last 5 pounds slowing her down. I eventually had to quit due to chronic overtraining injuries. I miss it, but see now that Mark's right about the inflammation issues of distance running.
Just a thought. I know it's dangerous to suggest less running to a Runner!
“Your task is not to seek for love, but merely to seek and find all the barriers within yourself that you have built against it.” Rumi