No I doubt you have. As long as you have a good release of pressure, good timing, you can NEVER ruin a horse. I've done so much to mess up the horse that I started with, but I have good timing, so she's come out beautifully. Nine years later, mind you, but she did. Horses take time. Don't give up, hun, I'm sure she's just not comfortable or maybe you're just asking wrong. I know, everyone gets frustrated, but she will be fine. The only way I've seen people ruin a horse is abuse, and even then, it's not unfixable.
Try picking up on her nose on the inside and asking with your outside leg. That usually works for me. Or she may just be braced... Try having her step through her back legs... In other words, have her do a forehand turn and make her back legs cross over each other just like it was on her fronts. If she resists this a little, she'll do little hopping steps. I dunno, it worked for my mare. Good luck!
To rein a horse is not only to guide him,
but also to control his every movement.