I hope I'm not going to get a black eye. It feels a little sore but looks okay.
You can't really say for sure yet. You'll know the next morning. If you're lucky you'll get a rainbow coloured one.
So you going to get a black eye? 
Better elbowing than poking with a finger.
I got an eye patch for a week when my sister managed to poke me in the eye one early morning. Most perfect way to wake up. Damn fingernail obsessed gender...
Though going YARRR! for a week was fun.
Now that is fun.
In resrospective and playing a pirate for a week, yes.
But waking up thinking "What's that scratching my face?"
Opening eyes just to see a finger with way too sharp nail coming straight at your eye and thinking "Oh, shi..."
Trying to close your eyes again but just being a little too late then feeling a seering pain for the next 24 hours and a pulsating pain for the next week is not.
PS. Anyone remember the times as kids when black eyes were cool? What ever happened to those times?
PPS. What do we learn from this kids? Do not sleep together with your sister if she's got long nails. Or at least wear protective glasses.