The proof is in her saying "An eye for an eye...They took one, so I took three." which could mean that they impaired her of her vision and she had to give herself the eyes of a hive so that she could see again. This meant that she had to cut out the other eye and bore a hole into her skull to fit the third hive eye. These eyes granted her the ability to see in the dark, much like night vision. But when she came back to earth, she brought the Hive with her because of the darkness that pours out from the eyes that she has taken. The darkness can only be seen on Eris, but not on the Hive, because it is in a higher concentration in a smaller area because of the bandages covering her eyes to slow the spread of the darkness from her to the guardians. She can also see through her bandages because of the power that the eyes have. So she can still see but, she has to wear the bandages to save the other guardians from ending up as a [quote]Hive minion[/quote] like her. She is classed as a Hive minion because of the fact that she is a vessel through which the darkness flows. Much like the guardians and ghosts are vessels of the light.

Maybe in expansions to come you work with her and become like her so you are able to blend in and have the same power that Crota has and defeat Oryx as a team with her. Using their own power against them. To add to my own idea of power we see the ranks which everyone is familiar to in this game, such as vanguard, and crucible, there is a new rank but more of something like, Crota's Power level. Which would also create a new level cap and maybe even a mix between a light and dark armour advantage. Like fighting fire with fire.