That's a really interesting question.
I'm always on the side of "convicting innocents is wrong" because I consider it a pure civil liberty issue subject to abuse.
However, you are going to have to defend against people doing a "damage amount" calculation. The malicious individuals are so vile and cause so much damage and exploitation while teenage sexting cases are generally sufficiently rare that the calculus probably doesn't come up in your favor.
In addition, I have see firsthand from a bystander position that prosecutors are generally pretty good about teen sexting. I watched as a prosecutor patiently explained to an idiot mother that if he managed to convict the boy in the sexting case, he was also paving the way to convict her daughter of exactly the same thing. So, she could go along, and both of the involved parties would get some relatively innocuous conviction that would go away for both when they became 18, or she could make a big fuss and both of them would be sex offender registrees (the DA was clearly going to uncover evidence of statutory rape along the way--the boy and girl were obviously having sex with each other).
The DA really didn't want the case to go very far. Of course, the DA involved didn't have to bow to religious nutcases to get elected.
The relatives of the mother finally browbeat her into submission, but it was unclear which way it was going to go for quite a while and it could have gone very badly for all parties involved.