I can see how it could be a set up, but how did the kid get Foley's personal email account.
Would you, under any circumstances, ask for a picture of a 16 year old boy/girl (that is not a close family relation) during an email exchange? No matter who initiated the conversation? How about asking what they wanted for their b-day? C'mon now, you know you wouldn't.
Could be part of the set up. Foley's enemies (who probably know alot more about him than just his personal email address) could have given it to the kid.