I'm kinda confused as to why the passport and driving licence photos were leaked. Certainly at least the passport appears to have been scanned, and it's unlikely that would have been on either the personal website or iCloud.
This might be a bit of a logical leap, but given Leslie got a lot of positive press for getting cyberbullied, could this leak be fake and designed to get more sympathy? Because at the moment it seems that someone hacked her iCloud, website and twitter simultaneously and also has a scanned photograph of her passport - which isn't impossible, but is a bit suspicious.