Before your next enraged outburst of hate, I encourage you to do something that will be very difficult for you and use your intellect.
Are you angry because girls and women are being abused? Are you angry at the injustice and suffering they experience?
Or are you angry because I'm telling people after learning about it?
I had no idea female genital mutilation was a part of Islam prescribed by Muhammad at the time when you first brought up Islam. I have learned so much about Islam so I thank you for prodding me to learn more about it so I can become a voice for the abused women.
Think hard about why you are angry.
Is your anger just? Or is your anger because of pride in your Islamic identity and you don't like the truths that are coming to light?
Truth is truth, whether we like it or not.
You have a choice about what you're going to support and protect.
You can convert away from the ideology of Islam. You now recognize serious problems with the teachings, including the promotion of violent, cruel, barbaric abuse against women and girls.
You don't have to stand by it. It's a choice.