The mother of a murder victim says Celine Cawley's family must be "going through hell" today.
Convicted wife killer Eamonn Lillis remains in Wheatfield prison on the day of his expected release.
The 57-year-old was handed down a sentence of six years and 11 months for the manslaughter of his wife Celine Cawley who he bludgeoned to death with a brick at their home in Howth in December 2008.
As a result of good behaviour he qualifies for a remission of a quarter of his sentence and is expected to walk free today.
Rose Callely's daughter Rachel was murdered by her husband Joe O'Reilly at their Dublin home in 2004, he is now serving a life term for the killing.
Rose says the short sentence imposed and the remission given to Eamonn Lillis is "immoral", and her thoughts today are with Celine's grieving family.
Ms Callely said: "Well my first thoughts were with her (Celine's) family, because only in a situation like that can somebody understand the pain.
"They can't negotiate their sentence, they have a life sentence.
"Even the thought of the short sentence he got, it wasn't short enough but they had to cut it short again, I can't get my head around that."
Eamonn Lillis is officially due for release from prison tomorrow but it is not customary for inmates to be let out on a Saturday.
It is understood he is refusing to sign a temporary release form that would see him get out of Wheatfield jail today.
A media crowd has been waiting for him at the gates since late last night.
He will leave prison a wealthy man has he has netted hundreds of thousands of euro from the dissolution of assets he held with his wife - including their house Rowan Hill, an investment property and their film company Toytown Productions.