Erasure Poem, by Kitty

This idea is too cool.  Over at a certain sharkly agent's web site, a reader named Kitty posted in comments a poem based on The Pericles Commission.

I was astounded (and flattered).  Here, with her permission, is The Pericles Commission, the Erasure Poem version, by Kitty:

A dead man at my feet 
lay facedown in the dirt 
shot through the heart. 
The body was warm to my touch 
his wound, slippery and wet 
I heard the footsteps of someone coming 
perhaps the killer 
I stepped backward to take cover


How did she create this?  Here's the first page of The Pericles Commission, with a few erasures: