I put Sammie's harness on her this weekend, and I was surprised when she just kinda flopped over and let me put it on without physical injury
Then I took her outside on the sidewalk (I live in an apartment so no backyard or anything) and she seemed terrified to be outside and started meowing loudly. Didn't try to run or anything, just stood there protesting. Then I saw a dog coming and put her inside. So Sammie doesn't seem too interested in the outside world, which is good because maybe she won't try to dart out the door, but then again, I think it'd be awesome to take her on walks.