As far as I know we have no canonical clue when Galadriel left Doriath itself (although with the Galadriel material being so messy, it's difficult to exclude that there might be something buried somewhere). There are some clues concerning the time when she left Beleriand, but they are quite vague and a bit contradictory.

I like what you have done with this--so many interesting angles! The identity issues, Galadriel aiding Teleri without actually fighting, her views on Thingol and Doriath--and, of course, the series of decisions she has to make.

I enjoyed the whole story, but I think vignette 5, with Maitimo, is my favorite. There is quite a lot packed into such a deceptively short space, and the line "Other than that, yes, it is that simple" is just perfect.