If someone is an arse, we do not have to be arse too

I have a colleague, and she is super irritating most of time.
Super selfish person you know. I mean I can be selfish, but compared to her, I must be looked like very kind and nice.

She never really talked to me even though we sit pretty close. She's just going back from overseas vacation, and she did not even share a single candy to her team.
It's not about the candy or chocolate. It's about attitude.

When I was going to Japan last year, she asked me to bring three thick comics and one ornament for her. Anywhere I went to vacations, I always bring her something, because we are teammate. It's a polite and nice thing to do.

But when she went to Japan, she didn't even give me one small candy.

Again, it is not about the candy or chocolate, it's about attitude. She is very rude and selfish, and unfortunately for her, I'm not Jesus, so I'm offended by her attitude.

I do not give slightest damn if she act like a mannequin and never talk to us. My teammate, colleagues, and myself already discuss about her attitude and we decide that if she didn't want any help and didn't want to talk and become friends, so it's just too bad for her. Not our problem.

Shortly, my boyfriend came from Medan last week and bring Meranti cake.
I distributed the cakes to everyone I know in my floor. My teammate and colleagues.
Then my friends (not singular) told me that I should not give her cake, so she can learn that it is not nice and not polite if you treat someone like that. It's not pretty to have attitude like that.
So I did not give her cake that day. So she can understand what it felt like to be isolated and taste her own medicine.

But I do not know, when I back from office, I felt a bit guilty. I mean, I do not like myself when I treat someone like that. I do not feel right. I talked to Amry (my boyfriend) and he said, well just give her one slice, there is no difference whether you give her or not. She will stay the same person. Stay annoying.

So, in the next morning, I give her a cake. And I feel better.

Sometimes, we cannot control how people behave. They can act like a bitch and we cannot really do anything to them. But we can always control our attitude towards people.
Just because some people are asses, we do not have to be asses as well.  We can choose to live in a good virtue that we expect. Always treat people with respect and kindness. Even though sometimes they do not seem to deserve it, but we do not want to be like them, don't we?