I don't know that it's possible to "grab" a part of Vicky and have the "externalized" skeleton follow her movements. Once you conform the skeleton to Vicky, you can't translate it. I don't think the grouping tool is a solution either. While you would create a static prop, you would still have the problem of getting all the parts to move mimicing Vicky's movements.

What might be possible is to create an animated pose using Vicky to perform all the movements you want, then save it. You could then load Vicky and the skeleton, but don't conform the skeleton to Vicky, just position it inside the body. Apply the animated pose to both figures. Create a keyframe on the frame you want to begin to translate the skeleton outside of Vicky's body. Add enough new frames to allow for the translation movment. Move to the frame where you want the translation to end, translate the skeleton and create another keyframe. When you render the animation, the skeleton should mimic Vicky's movements.

There may be ways to do it using python scripts, but I'm not familiar with any. That's not to say it can't be done, just that I don't know of any existing scripts to do it nor am I familiar enough with python to write one.

It's all fun and games...
Until the flying monkeys attack!!!