ouch, hip surgery, sounds like she's been thru so much already...

I know how you feel about the fenced in yard. I thought I had a dog's dream yard, til I discovered Sadie was jumping the fence no problem. I tried explaining she could stay outside all day if she didn't leave the yard, she didn't listen. I used to just watch her from the back door and when she was ready to come in she would jump the fence and go to the front door. She didn't run away, she just sat and waited for me in the front. Weird.

Shelter dogs can have a lot of anxiety issues - my Sadie did for about 2 years (accidents in the house & chewing when left alone). This site gives great advice for behavior issues - I wish it existed when Sadie was young and before she realized I was easier to train than she was .