Thanks you guys- I'm afraid she ended up being a chew toy dangled on a leash as I pulled her up by her harness reactively when he lunged at her with his teeth, he jumped up to get her dangling there and I turned and pulled her into my chest- luckily when he lunged directly at my chest to pursue her my bellowed "no!" Coupled with the realization he was lunging at a human kicked in- thank god! The owner really was in tears over the issue but I definitely was too. Whew! So glad these times are passed! So glad to see my little girl smile and tail wag. Thank you for celebrating with me! 
