OK i have this horse and........?

Ok we have had htis horse since she was a baby. well she was my grandmas horse than. When she was old enough to get broke my grandma took her to this guy who completely wrecked her! About maybe 1 year later she found someone else to retry breaking her. That guy was a idiot he wrecked to. The guy was just riding her out of the barn and she got scared and bolted and they went flying out and he fell off and got a relly bad concustion. my grandma gave the horse to my mom. Again about another 1 year later we found this lady who we got to try and try abd break her again. She stayed there for about 2 months. When we got her back the lady said she was solid as a rock so about a week later I got on her(i was 7 and now i am 12) and my mom led her around. My mom stopped her and all at once she was trying to bolt and my mom was trying to hold on to her she was spinning n cirlces andi coldn't do anyhting becuz my foot was stuck in the stirrup. When i got my foot out of the stirrup i jumped and if i hadn't of rolled under the fence i would of gotten crushed by her(by the way she is about 15.3 hh) So than my mom traided her with the lady was suppose ot of broken her buy my mom traded her for this ohter horse. About maybe 2 or 3 years later my dad had a accident on the one horse we had and we traded 2 of ther horses we got from the lady for the other horse back. Now I am scared to try and ride that horse because of my accident she is a relly nice horse. And the lady said there was a 12 year old girl that was riding her do you think i should try riding her again?