I also have to say that I appreciate the restraint of the Supergirl writers in not injecting some made-up Kryptonian "hip teen" slang into Kara's first-person - writers so often try to be clever that way, and it always fails.
If they manage to not fall into the trap of writing Supergirl as a human adolescent, I'll be pleasantly surprised. Of course, the fact that it's untrue to the character's circumstance is only half the problem; the other is that adults trying to write kids usually comes off as the phoniest thing in the world.
Except for Frank Miller. Now that is a man who has his ear to the mouth of teenaged girls.