Am I supposed to feel bad for...Kathy?

I do not think we are supposed to feel bad for Kathy, but in the end, I felt guilty for the way I had perceived her throughout the episode. The episode is set up in a way to make her look like the "roommate from hell" but I cannot help but feel sorry for her. In the end, all she wanted to do was attend college and have an opportunity at a new life. I certainly do not forgive her for trying to take Buffy's soul however I think it is important to point out the human aspect of her plight. Throughout the episode there were villains, blood drinking, and dark holes, but the whole circumstance was COMPLETLY human. We all have trouble with roommates and we all make major sacrifices to attend college. Ultimately though, in a world of the supernatural, the plot line was commonplace. The point I am trying to make is that even though she is a monster (or whatever she was), it is hard for me to perceive her feelings as monstrous. She may be different in OUR world, but in Sunnyside, it is important to treat Kathy as you would any other character. Even though I know very little about the show, I think Buffy contradicts herself when she insinuates that because Kathy is evil, she is therefore a monster. I feel this way because from what I can tell, there are good monsters too, like their werewolf friend. If reality is pushed as far as it is in the show, shouldn't monsters/vampires have the benefit of morality, even if it does not align with how humans understand it?