Catrin (The Christmas Invasion)
From Tardis Wiki, the free Doctor Who reference
Catrin was the sister of Jonathan and the daughter of Alan, all of whom had A positive blood. In 2006, when the Sycorax controlled the A positive blood in humans, threatening to make them jump from tall buildings, her mum tried to stop her. She was eventually released from the Sycorax' control. (TV: The Christmas Invasion)
