I think if you have the means to buy her and take lessons with a trainer to teach you and keep her honest, do it!
Not only will you have a good solid horse to learn on but that will give you time to teach your up and comer. How can you teach a young horse if you don't know what a solid broke one feels like? It gives you something to work towards.
And she sounds like she gave you a bit of a confidence boost :)
I DON'T LEAD 'EM AND FEED 'EM, I RIDE 'EM AND SLIDE 'EM.