Thanks all. It just does my heart good to see every bit of progress she makes. She now gets very excited when I come out to visit and I can see she really wants to be friends, which makes me feel very good.
I'll be bringing Bella inside in about a week so that she'll be in when she has her pups and starts nursing them. This will leave Chip and Hickory in the big run alone. I'm hoping that with less competition for attention, Hickory will settle down a bit more too. When Bella goes back out in a few weeks, she'll graduate to a new run we're building just for her and her litter. In time, likely once all the pups have left, each of the dogs will be in separate runs right along side each other, which will give me an easier time of working with them all individually. I'll still have the big communal run so they can play together too, but won't have to contend with being attacked from all sides at once. lol