If she is the Doctor, and this is inside the Doctor's mind, and that is a female aspect of his personality, then these people are not being saved... They're just memories of the Doctor's failures.
What if Regeneration is like conception where 70 billion sperms try to race towards and penetrate an egg first, but instead of many sperms, it's many watchers.
Thousands of Watchers fling themselves at the Doctors mind but only one takes control.
Oh good, I love that.