Thats not her if your talking about the Doctor Adventures clip in the waiting room.
Heres the trailer.
About 13 seconds in a girl comes in with the same style as Mason, but instead of the tattoo on her right hand saying "Whos" in her "Who's Next" Tattoos it says "Time". Plus it doesnt look like Mason, and that girl is more petite and doesn't have the massive fake tits.