Anna 13

So, "Turn Left" happens, and spawns a different Anna, Anna 1. Anna 1 then gets taken by the angels, rescues herself, and ends up in the Tardis... only to find the Doctor dead. Anna 1 ends up in the alternate timeline. "Turn Left" happens and spawns more Anna's, all the way to Anna 13. Except, the angels never existed in "Turn Left." So, where did Anna 1 come from?