Sadly the stealth mini game is broken. The tutorial shows you are supposed to click on feet to progress, but those feet no longer show up. If you click randomly you may find where the feet actually are, that's how I got thru finding the nail polish, but have repeatedly tried and can't do the next stage and as I remember stealth happens fairly frequently, so I will delete this game and wait till it gets fixed, but based on my searched for fixes it never will.