I totally understand. in my case, my mother was adopted, but I didn't know it till last August. I had already tested with the other two companies and here I tested Jan 2014 so when I had my top match, I didn't think anything since I assumed it was like the other companies. Then my mom finally tested in March, same person as her top match but again, I made that same assumption. Until recently.

Hopefully we get this all taken care of, both for you and in my situation. I'm in that position like your match, have no tree, at least not for my mother's side. Or I had a tree, thought that her adoptive parents may have been distantly related and got relatives to test already, which is when she revealed to me that she knew she was already adopted. :/