Should I buy this horse?

I am a 13 year old girl. I already have a horse in my home country Brazil, but my riding teacher says that I have ped the level of riding club horses. I take jumping lessons more than dressage. I jump up to 80cm. The mare is slightly high, I don't know how many hands, but she is about 155cm tall. She is 9 years old. She has a very docile character, she is highly obedient and very high-spirited. However, she is very easily spooked and she has trouble trying new things. Her paces are smooth and her jumping is excellent (up to 120cm high). I do not know her breed, for it is a typical colombian breed (I live in Colombia). She will cost me about 5000 US dollars (10 million colombian pesos). Should I buy her?