Doctor Whooves: Regeneration

After recovering his memories, The Doctor learns the damage The Professor sustained to her TARDIS. However this is not the end of the vengeful Time Lord. She will not let this attack go unpunished, or will she? The Doctor laments for their destinies, for their positions could easily be swapped. He wants to save her, but after 1300 years hunting him down, is it too late to save her?