I was kinda questioning that myself because I am in the market for a new horse. I had a first horse back when I was active in 4H, I was about 17 years old. I am 25 now so it has been a while for me since I owned one. My friend is your height and she has 15 - 16 hand horses. I tried out some horses locally even though I am not ready to buy just to see if I still had my confidence and how tall a horse I was comfortable with. I am only 5'5 so 14.2 is still tall enough for me but I've always liked bigger horses myself. I am settling for a taller horse, around 16 hands because I want to jump. If I were you, I would go with whatever you are comfortable with now because you can always trade or get a bigger one if you become unsatisfied.
Horses change lives. They give our young people confidence and self esteem. They provide peace and tranquility to troubled souls- they give us hope!