How much will a teenager's nose grow from age 14-18?

4 years is pretty long I might say but I am wondering because my cousin (who lives next door) is always telling me about how she hates her nose and stuff and she is only 14, which is way too young for any knives hitting her nose. So her mom told her when she is 18 she can look into that but she is now stressing her nose will grow 10x bigger in the next 4 years. And is there any way to prevent nose growth?