Heureka!

I finally cracked it! Kimmy pretty much stopped biting/nipping my ankles while walking on leash, but still was a holy terror when off leash. Today, I suddenly got the perfect idea of a solution - and it worked!

I didn't unclip her leash when it was time for off leash walk - I left it attached to the collar, trailing on the ground with her.

Inevitably, as soon as she was free, she went in front of me, turned to face me, walking backwards to avoid getting stepped on, and started grabbing my ankles/boots again. As the leash trailed between her legs right in front of me, I stepped on it, which gave her a jolt, we both were now stopped, I looked in her eyes, gently shook her collar and said "no".

Then I released my foot from the leash, and started walking again. She tried it again in a few seconds, and I repeated the same thing. After the third correction, she decided it wasn't worth it, and left my feet alone for the remainder of the walk.

Rejoice with me! I outsmarted a Doberman!!! :)