I'm thinking of ghosting a girl I really liked
Why would you ghost someone you like?
I want to do it, even if it hurts her.
Why do you want to leave the connect if you really like her? This will cause her to not like you as much.
So that she realizes that she can't play with my emotions.
If you feel hurt by the actions that she has taken, you should talk to her about it. Leaving the connection with no explanation will cause you to feel regret later when you realize that you could have handled it better.