Novel Title

While scouring online for ideas for a book cover for Immo1, I was dismayed to find that another author is using the same name for the title of her series. I created the name in 2009 and as far as I could tell, it was unique at the time. Her books started coming out in 2010. So now I'm left with a serious dilemma. Do I continue using the title that I have used for the past 2 years, or do I abandon it and craft a new title in lieu of this other series? Part of me wants to say "Screw all that. It is MY title, dammit!" But, this author is writing in the same genre, is published through the same ebook distributor as I will be, and she has three novels out already under that name. So, part of me wants to concede and avoid competition, confusion, and possible alienation of that author.

Adding to this, I found out that R. A. Salvator published a novel under the same name in 2003. Apparently I missed that back in 2009. It is the name of a few World of Warcraft guilds and an album name for a metal band as well. o.0

Ugh. What to do?