The position looks about right to be her nipple. The shape is circular, and it's too dark to be a shadow. It looks like her nipple aurora. The video is here: * Links to streaming video sites such as youtube may not be posted in the content sections however they are allowed in the 'General Comments' and 'Sports and Entertainment' sections. . It'd be nice if someone has a higher resolution version.
All pictures must be posted using thumbnail links. This dramatically improves the performance of the forum and does not force users on slower connections to have to download megabytes of data when they open a thread. Use the "Preview Post" function to be sure you have the correct thumbnail code. A tutorial on how to thumbnail can be found here: How to post Thumbnails.