Veena Brady

Veena Brady (TV: Turn Left) was one of Donna Noble's friends.

Donna Noble lied to her mother Sylvia that she was going to stay at Veena's house for a bit, when she was actually on her way to travel in time and space with the Tenth Doctor. (TV: Partners in Crime)

Sylvia later phoned Veena to confirm this, but she hadn't seen "hide nor hair" of Donna. (TV: The Sontaran Stratagem)

After the Earth was transported to the Medusa Cascade and back, Veena texted Donna about the planets in the sky. However, Donna had no memory of the crisis due to her memories of her travels with the Doctor being erased. (TV: Journey's End)

Behind the scenes
Veena is named in dialogue in Partners in Crime, The Sontaran Stratagem and Journey's End, but not in Turn Left, her only on-screen appearance, in which her name is identified in the credits.

Veena Brady