Chances of Prosecution for Misconduct on Omegle

My question involves criminal law for the state of: Texas
*For the hypothetical situation below, please assume that the subject is a minor (aged 16) in the state of Texas.
If this person was on a site similar to Omegle, and both saw (knowingly) and showed their own body( what would legally be considered CP), What is the likelihood of a case being brought against them? The person has no pictures or any documentation saved, meaning that they have nothing in their possession unless it is in possession of a third party ie.(search engine) (because nothing was saved on the hard drive and the ram is cleared every time a computer is shut down and then turned on). So, if another person took a snapshot of our minor, and uploaded them somewhere, would there be any way that he/she could be identified as the source of the photos? All the information present is a view of the face and private areas (both in different shots). If he was identified, how likely would he/she be to be charged by a state or federal prosecutor? And finally, what should our minor do in the present, in anticipation of the worst? How would these questions be different if there was no evidence on either end?
Thank You for Your Time and Consideration

Nobody can tell you the odds. If you don't like the thought of prison, don't commit sex offenses.