You can clearly hear Ashley tell the GGW cameraman her name is Amber Arpaio and that she is over 18. Camera guy got a shot of her license (FAKE!!!) as proof.
You've seen the video of Amber -- er, Kristen, er Ashley -- partying it up with the GGW crew in Florida. There was a debate about how old she was when the footage was shot and whether or not she lied about her age. Debate ... over!