Them young ones have a tease genie that they are born with. For reason to long to describe in detail, I was living with my older brother for a 10 month period, I had 2 great nieces that were the very same way, love showing off or hope that you would catch a peek of them coming from the bathroom to their bedroom, or talking to you about their sex life or just a touch at different times. Rub a foot under the table at meal times, or coming into your bedroom at times and set on the side of your bed in their night cloths. So the teasing is a way for them to see if your really interested or not, no matter whom you might be.

They probably aren't teasing. As a Dad I can assure you they are innocent. Respect that. You're getting off on the wrong thing.