Do you have any more pictures? These pictures tend to be difficult for identifying the gender if the fish. The fish also seems a little washed out because of stress. The last photo appears to be artificially enhanced so this makes it difficult too. If you have more pictures, this would help me to identify the fish more accurately, and also how big is the green terror?
It is really to small to tell for sure unless you vent it. Going by color is not a relieable way to sex these guys (good example is my GT. Lots of people said it was a female, turned out to be a male ;-) ) You shouldnt judge by the dorsal fin either. i had a female with long trailing dorsal that was pointed that layed eggs all the time. Its easier to sex them around 4-5 inches. As of now if i had to make a "guess" i would say female
I'd say female as well. She is more of an olive green color compared to the much more brighter green seen in males.
Also the face says female, little hard to describe why though.