Awww enellie16 you clearly are a caring young lady.
After years of wearing short trousers the cold is insignificant. I am used to it. As to the length of my shorts most have no more than a 5" inside leg. That means mid thigh. I do however have much shorter shorts, my parents refer to them as play shorts. I have just had to beg my 'babysitter' to allow me to stay on the computer. I have been in my pyjamas for ages.