Dishonorable kill issue.

Decedra Willham NPC on the dock on Theramore Isle is NOT flagged as a civilian. I killed her and got dishonorable kill and RP loss. Correct me if i am wrong but shouldnt the NPCs with grey tag 'civilian' give DKs and not the ones with normal name tag? Here is a screenshot as proof.
http://i.imgur.com/tHkCQDo.jpg
PvPers who didnt know this like me pay close attention on what you are killing.
100RP loss isnt that much, but it can make a difference on hitting some rank on 99%.
Could i please have someone to assist me on this matter? Thank you very much for your time.
http://i.imgur.com/tHkCQDo.jpg
PvPers who didnt know this like me pay close attention on what you are killing.
100RP loss isnt that much, but it can make a difference on hitting some rank on 99%.
Could i please have someone to assist me on this matter? Thank you very much for your time.