She has returned five days ago.
I want to express the idea that she has returned, and that she returned five days ago. So I'm thinking the above construction is permissible, and I vaguely remember seeing such a construction in texts on the web, etc., and this is a source of confusion for me, as to what is really permissible, whether strictly or not-so-strictly.
Also, if the above is just not correct, what about this?:
She has returned, five days ago.