
Not all of my five minute freewrites make nice tidy stories. Sometimes the tidy story will take a lot longer than five minutes to tell. When my freewrites come out like that, it's Pop Up We Write contest time!
Guidelines are below the prompt story (in bold italics below), but your task is pretty simple; I have written the beginning of a story, and you have to finish it.

Here's your prompt:
To Elder, Sister always seemed to have dirt on her face. Others thought Sister was peachy keen, top of the heap, something to admire, to cherish, to laugh with, and to love. But Elder knew Sister was dirty dirty dirty, in the way only an older sister could know such things. A sister who had been stabbed in the back, time and again, from the moment Sister was born.
Of course, Elder wasn’t without her own unsavory identities. She was pretty sure that SHE was the peachy keen one of the two. So she devoted her life, from the moment Sister was born, to showing up Sister. This was easy in the intellectual department, because Sister’s aim was only moderately good when she shot from the heart. Elder’s aim was unerring when she shot from the head.
“What's that got to do with the price of eggs?” Elder asked, that time Sister was having a hissy fit about the ice skate.
“We’re not talking about the price of eggs!!” Sister stamped her foot, turned purple and cried.
Elder had perfected her smirk by this time, and smirk she did.

I will reward anyone who finishes the story.
Contest Guidelines
You may head any direction and/or distance in time and/or space.
Your entry must be posted in The Freewriters Community, hive-161155.
1000 word limit.
Bonus points for under 500 words.
Please leave a link to your entry in the comments on this post.
No deadline. Well, before I kick the bucket, if you want your reward.

This is also my entry to @mariannewest's daily freewrite challenge. Today's prompt is dirt on face.

