Alice Coltrane
From Tardis Wiki, the free Doctor Who reference
Alice Coltrane had her life changed for the worse on 25 June 2007, when Donna Noble turned right instead of left; this small change in affairs produced Donna's World.
She attended a Christmas party at a bar in London where the Webstar attacked. As the party guests looked on at the spectacle, Alice remained transfixed on Donna's back, being one of the few people who could see what was on her back.
At some point beforehand, she claimed to have seen the ghost of Earl Mountbatten at the Boat Show. (TV: Turn Left)