Mags (The Curse of Clyde Langer)
From Tardis Wiki, the free Doctor Who reference
Mags was a homeless woman and acquaintance of Ellie Faber. She appeared to have some form of psychic powers.
Biography
Mags was introduced to Clyde by Ellie at a soup kitchen. She read her tea leaves and accurately saw that there was a curse on Clyde. (SJA: The Curse of Clyde Langer)