Day 5 - Write a scene entirely in dialog

This a Flashfic based on a prompt from ravenswept's 30 Days of Flash Fiction Meme

My 30 Days of Flashfic Index Page

Day 5 – Write a scene entirely in dialog

Considering that 1, 2, and 4 were almost entirely dialog you wouldn't think this was a troubling one. After two failed attempts I decided to do a continuation of the fourth writing prompt.

( Big sisters sometimes carry out their threats... Scene under the cut... )