If Clare had gone through with her plan,
1. Asher would probably say Clare sent him the photos unsolicited and he didn't report it because he didn't want to embarrass her any further.
2.Or he might say that they had a consensual relationship and that Clare made up the charges after he broke it off.
3. Even if he did go to jail for posession of child porn or statuatory rape, Clare would still look bad.
1. True, but it would seem fishy on his part.
2. If they had a consensual relationship, he would have gone to jail immediately, right then and there (statutory rape as you said)
3. Even though Clare would still look bad, at least she would have succeeded in her revenge against Asher (even if it would: ruin her reputation, have people labeling her as some obsessed slut, have people thinking that she cheated on Eli, or have rumors going around that she was a home wrecker).