If you are only going to be gone a week, it will be okay if your chin does not have out of cage time. This is especially true if the person feeding your chin is not as familiar with him/her as you are. I have gone on vacation plenty of times and left a pet sitter (vet tech) in charge of my...
I think chins just do what comes naturally. Also, their abilities may vary based on age, size, etc.
I do believe that they have mind control powers. Their cuteness is their superpower and they know it. ;)
I think those are the best ideas. Just keep an eye on her and see how she does for now. I have found the chinnie buddies to be useful. Most of my guys have them.
I have two chins that are fur chewers. One of them seems to give himself a trim (i.e.- the fur is shortened and he doesn't typically have bald spots, the other chin looks like he has a ring around his head/shoulder area and the fur is totally missing. Does your chin seem fine other than the fur...