My friend showed me a skirt she loved but I'm going to buy the one she hated for her.
Why are you going to get her the one she hated and not the one she loved?
I will take pleasure from her disappointment.
Don't give her something you know she won't want, that's mean. Get her the skirt that she loved.
I don't care about her happiness.
Then it's better to not get her anything. Don't give people gifts you know they won't like.