Shareen Costello's mother
From Tardis Wiki, the free Doctor Who reference
Shareen Costello (PROSE: Meet Rose [+]Loading...["Meet Rose (short story)"]) had a mother.
When the Tenth Doctor asked Rose Tyler if she could understand sign language, Rose said that she could not but that Shareen's mother had a friend who did. (PROSE: No One Died [+]Loading...["No One Died (short story)"])