On February 5, 2013, Butler's boss discovered the money was missing.
At a meeting the same day, Butler admitted taking the money. She apologised and was sacked.
Later that day she sent her former boss a text message again apologising.
Butler's lawyer Frank Minehan said his client was willing to pay the stolen money back in instalments and was remorseful.
"She has been upfront from the beginning and admitted her fault," he said.
Judge Morris said Butler's offending had had a huge impact on the victim, who had since been forced to close her business.
Butler has previous convictions but no theft convictions "for quite some time," Judge Morris said.