Analysis of Tell Tale Heart

The story, of The Tell Tale Heart by Edgar Allen Poe is surely a confusing one.  So first off this really crazy person (who by the way, we don't know whether they are a man or a woman) just goes crazy plotting to kill another man.  By human nature, we tend to assume that when there is no given gender, it is a man but after thinking and reading through the story a couple of times, I began to believe that this killer could very well be a woman.  A very big part of this story was the killer's motif of killing the man, which the narrator describes as "evil eye".  I found this reason to make no sense at all and I started to conclude that there were additional emotions that the narrator had towards the man that they were not able to express.      Since I saw the narrator as more of a servant than any other possibility, I came to the conclusion that the servant was secretly in love with the man and decided to kill him since the man did not feel the same. duh...thanks