User blog comment:MegaScience/Considering Odd Events of ''BioShock 2''/@comment-1708707-20100602193922

I played through Inner Persephone again and noticed that there is a shadow from the area the ball was kicked. Although the shadow is very thin and a little hard to see, it appears to be of a little sister. Also, the end of the shadow seems to be at the far wall, right next to the vent. My conclusion... It's a little sister. Why a sister would be wandering around kicking rubber balls and hopping in and out of vents is beyond me.