@Huichelaar That's because you're only thinking on the surface.
"Now you mention you cannot see her actions as evil. Don't these two statements contradict each other?"
No, they don't, If she is both good and evil, it means that she is neutral she has both sides so she belongs to neither.
"Also, "commit dubious actions to do proper good", doesn't make sense to me. If it causes 'proper' good, how would this action be dubious? If it's a dubious action, why would it do 'proper' good? What's the difference between 'proper' good and regular good?"
Simple, it's believed that manipulation and murder are evil actions, but you can use both actions to do good.
Example: by removing a dangerous element who was trying to kill a politician behind a motion that will improve the health sector making services cheaper and more accessible. Imagine that you only just seen the murdered aiming his gun at the head of the politician, you don't have the number of his bodyguards, you cannot call police because the politician will die by the time police arrives, but you have your own gun.
Or, in case of manipulation, you can convince someone stuborn who don't usually accept help from anyone, to do something for you, but as a matter of fact this "something" will actually help them instead. Because you know they are going through a hard phase and need the extra help.
You used evil to do proper good. Regular good would be good actions leading to good results.
"What do you mean she does the right thing as her actions solve problems they were made to deal with? If my neighbour is annoying me, and I decide to shoot them, does that mean that I'm doing the right thing because my action solved the problem it was made (meant?) to deal with? I don't see how purpose justifies actions." Purpose can justify actions so long as the "purpose" comes from an objective, valid reason. Imagine someone invaded your house and threatened to kill your family, shooting the guy would be considered a crime if not for the purpose bihind your actions. You injured him because if you didn't it would be your family the ones ot be hurt. It'ss because purpose can justify actions that certain exceptions were added to the law.