Katina was a fortune teller and member of the Night Travellers. Unlike other members of the Night Travellers, she didn't become trapped on film. (TV: From Out of the Rain)
Behind the scenes
Although Katina never appears in From Out of the Rain, a sign advertising her does appear in the episode alongside the rest of the Night Travellers; it can be seen briefly behind Alfred and Lily Mace in a flashback to 1911.