I genuinely feel no love for my mother
Are you sure about that? Why do you feel no love for your mother?
She always tells me she loves me, but never shows love to me
People have different ways of showing their love. It's expected that children love their parents unconditionally. Your mother won't be around forever.
I hate how she made me feel growing up.
I think it would be a good idea to stop focusing on how you felt during your childhood now that you're an adult. Try approaching your relationship with your mother as an adult. I'm sure you'll see that you do have love for her.