Where did she go!???

As a family we were going to a fast food restaurant in Athens and our daughter was 3-4 years old. We have a good meal but then suddenly my daughter rises up from her chair and goes to another family and takes an empty chair and sits at their table with them instead. We were as surprised as they were. She sat there like it was the most natural thing in the world. At least she did not eat their food! After some time and some conversation with the new table she returned to home base. Really odd kid!