The Woman (The End of Time)

"The Woman" was a mysterious Time Lady and ally to the Doctor. She appeared to Wilfred Mott on several occasions both prior and during the resurrection of the Master.

Biography
The Woman was first seen in a church on December 23, 2009, in conventional Human clothes. She told Wilfred Mott of the church's past. It was once a convent that had been attacked by a demon from the skies in the 1300s, and was saved by a "sainted physician". After saying that the physician might appear again, she vanished.

She next appeared to Wilf on Christmas Day via an image appearing on television which only Wilf could see. She told Wilf that he needed to take up arms, and that the Doctor's life could still be saved. Before vanishing again, she warned Wilf not to tell the Doctor of anything she had said to him.

She once more appeared to Wilf on the Vinvocci's spaceship, when Wilf claimed to be lost, claiming that he was found, and telling him that it was the Doctor's final battle, and that he had to take up arms. He asked her who she was, but she remained silent and told him that she was lost so long ago, before disappearing once more.

Whenever the Woman appeared to Wilf, she appeared somewhat older, and has slightly more grey hair.

During the final phases of the Last Great Time War, at which time the Doctor had turned against the Time Lords, she, with another unnamed Time Lord, opposed the decision of Lord President Rassilon's plan to destroy Time itself. Rassilon condemned her and the other Time Lord to cover their faces "like the Weeping Angels of old". When Rassilon came to Earth on Christmas Day, 2009, as the Doctor looked at her, she briefly uncovered her face and looked at him. They seemed to share a recognition of each other. She shed a single tear, and glanced toward the diamond being used as part of Rassilon's plan. This seemed to be the inspiration which the Doctor needed to shoot the diamond, sending her and the other Time Lords back into the Last Great Time War. Her giving him that inspiration saved him from the terrible choice of having to shoot either the Master or Rassilon. When the enraged Rassilon turned to kill the Doctor, she returned to her weeping position, but he was saved by the Master. The Woman and the other Time Lords were returned to Gallifrey where they died when it was destroyed. When later asked by Wilfred who she was, the Doctor replied only with silence. (DW: The End of Time)

Behind the scenes
In the final script, the identity of the Woman is not revealed. In REF: Doctor Who: The Writer's Tale - The Final Chapter, Russell T Davies states that he created the character to be the Doctor's mother and this is what actress Claire Bloom was told when she was cast. During filming, newspapers The Daily Mail and The Daily Telegraph announced that Claire Bloom would be portraying the Doctor's mother. 

However, Davies has acknowledged that the character could be interpreted as any trustworthy Time Lady or possibly evensomeone else.

In commentary for the second half of DW: The End of Time, Julie Gardner was of the strong opinion that The Woman was the Doctor's mother, but admitted there was enough ambiguity to allow other interpretations. Russell T. Davies, for his part, generally refused to be drawn by Gardner's comparative certainty about The Woman's identity.