There is not a specific length as a person could be "short" and still be considered to have long legs proportionately. (It's hard to explain what constitutes long legs because it's all about the relationship of the legs to the length of the torso.) But, I'd have to say that if your legs are over 8 feet long, it's probably safe to say you have long legs for a 14-year-old.
yes
Spread your legs.
depends on how tall the girl is but it seems normal.. as long as you are happy and able to do the things you want you are fine!!
Maan
By spreading her legs!
Most do
No 5'3 is average to tall for a 13 year old girl
No.
no
No, definitely not. A 16 year old girl is not considered an adult wheather she is pregnant or not!
same way a 40 year old does it. I would suggest waxing or the legs will get hairier; waxing helps thin it out. Lasers not a good idea until after puberty.