I no longer help the person whom I used to, because of too many "bite the hand that feeds you" episodes.

But as a human being, I try to show basic consideration towards everyone, even if I can't go out of my way to help someone.

For example, I recently bumped into this person inside a building as she was lost trying to find her way to a function. I tried to help her out and informed her where it is. She disagreed with me suggesting that I don't know what I am talking about, and then I overheard her mocking me as she walked away.

Although I no longer do favors for her, when I see someone in need right in front of me, the natural thing to do is to look out for that person. Even a stranger helps you when you are lost.

But with this person any and every little kindness I show her, she uses that as an opportunity to bring me down. So would it be inconsiderate or inhuman of me to show her absolutely no kindness that I would normally show another human being and pretend like she doesn't exist?