Veena Brady

Veena Brady 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)

Parallel world
In a parallel world, Veena praised Jival Chowdry when he promoted Donna Noble and she was buying all the drinks. Veena was present when the Webstar appeared. She mistook the ship for a Christmas decoration and was chided by Mooky. (TV: Turn Left)

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 Turn Left her name is identified in the credits.