Keep in mind that you should always be open with any prospective clients about her age - many won't do business with someone under 18 (and rightly so) because they can't be held to a contract in many places (age limit may vary depending on where they are). That means they're completely taking on the risk if that content is plagiarized in any way, not delivered, not what they asked for, etc. You also need to check the TOS for sites like AC before directing her to them (for the same reason).