I'm going to tell my mom she can't come visit this year
Why would you tell your mom that?
She annoys me when she visits.
It's mean to tell your mom she can't visit you. You should always want to include her in your life.
I just don't want her coming to visit. She can visit next year.
You should want to see your mother as much as possible so long as she still lives. You may regret ignoring her later in life.