The End of Time
Abigail Naismith was the daughter of Joshua Naismith.
Abigail had heard rumours of “Harold Saxon, his disciples, his return”. Her father said that she enjoyed such things. Abigail was vain and narcissistic. On Christmas 2009, her father used the Immortality Gate in an attempt to give her the immortality she wanted. After repairing it, The Master entered the gate and she was turned into a copy of him, along with the entire human race except for Wilfred Mott and Donna Noble. After being returned to normal, she was arrested for “crimes undisclosed”. (The End of Time)
Behind the scenes
Abigail claims that her name means “Bringer of joy” when in fact Abigail means “Father’s joy”.