Wow! Who told you the horse was broke? Did they get the horse mixed up with another horse? I think I'd be ready to kill a person if they told me a horse was broke and after I'm bucked, I find out that she's hardly been ridden at all .
The rescue who sold the lady the horse told her that the horse was broke with tons of rides on her, but that she hadn't been ridden in a while. Last week, our BO (who also trains horses) saddled her up and took her in the round pen because the owner is now paying him to train the horse for her. He said that as soon as he got in the round pen, he could tell that she wasn't broke at all. In fact, he said that there was no way on God's green Earth anyone had EVER been in that saddle before me. He also said that the mare has the wildest eye he's ever seen "outside of a mustang straight off the range."
Mind you, my friend and I took this mare in the round pen and tried to lunge her before I climbed up on her, but she wouldn't lunge. No big deal, I thought, since my old gelding (who was six when I started working with him) didn't know how to lunge when I started working with him either. So, we weighted the saddle, but the mare never flinched. My friend counter-balanced the stirrup for me and I swung up. My butt wasn't even in the saddle and I started to reach down to slip my right foot into the stirrup (the saddle we were using is built funny and it was hard to catch it with just my foot), when she threw a little crow hop at me. No worries, I thought. That wasn't that bad, maybe she just didn't like me leaning forward like that. Next thing I know, her ears are pinned, her head snaps around so she can look at me out of her right eye and she BUCKS. Full-on rodeo bronc buck. I flipped over her right shoulder and landed HARD on my butt, then back, then head. First time in two years I wasn't wearing a helmet and I paid for it. I was seeing stars for a few seconds, which is why I only know from my friend second-hand that the mare flipped, rolled and then came after me while I was still on the ground.
I ended up with a severely sprained ankle (they thought I'd fractured it in the ER, but it ended being the shadow of a bone spur that made it look like a hairline fracture), was in a splint for a week and a walking cast for two weeks. I've been cleared to ride for just over a week now and have ridden my own horse three times so far (and was scared out of my mind every time, even though I KNOW he won't do anything, even though he's green).