My father was also emotionali abusive he always made fun of me (even infront of my friends and adults) I stutter since I was 2 years old now I am 16 and things are the same my stutter never got worse or better but my mother was luckily very supportive she and my grand parents were the only people that actually cared what I tried to say. The only thing I learned through all these years is to try to live your life normally I mean yeah you stutter but that should never stop you from trying new things (although when I was 13-15 I was always afraid to talk to people but luckily I grown out of it.) I wish the best for you! Stay strong!