Can I stop talking to a good friend of mine after finding out she likes me?
Is this something you have been planning? How exactly are you going to do it?
Well I'm going to "inform" her of the changes since she was acting a little too strange around me.
You shouldn't end a friendship because your friend is interested in you. Maybe you can set some boundaries with your friend about how to move forward in a way that makes you both feel comfortable in the friendship.
I don't care and she made me feel uncomfortable when she started being close to me.
She likes you, but that doesn't mean that you have to stop being her friend. She cares about you and you cared about her enough to be her friend, so you should continue that care by letting her down easy and then remaining friends.