Kathleen Chada says it's 'an insult' and 'farcical' that her ex-husband is able to apply for parole just seven years after murdering their two sons.
Sanjeev Chada killed Eoghan (10) and Ruairí (5) in Co Mayo in July 2013.
He given two life sentences after pleading guilty to their murders the following year.
Sanjeev is now appealing his double life sentence to the parole board, in his first bid for freedom.
Speaking to Newstalk Breakfast, Kathleen said she was shocked he was able to apply already, since she expected it would be 12 years under new parole laws introduced last year.
She said: "I was also shocked that he actually applied, to be honest: I didn't expect him to.
"For some reason I had myself convinced that he probably wouldn't apply, given what he had done - that he would take his punishment.
"It's somewhat farcical really... seven years is an insult really."
Kathleen says she knows her sons' killer will not get released at this point.
She said: "I'm not concerned he will actually get parole, because I do know the average life sentence here in Ireland is 19 years. Given the nature of what he did, I am confident he won't actually be out.
"It's the fact that he can apply... the time that's wasted... and the pain it brings to me and my family."
'It's constantly there in your mind'
Kathleen says she's spoken to other families who've lost loved ones, who are now seeing the parole process for the killers happening for a second or third time.
She said: "You're constantly living your life waiting for that.
"It's very easy to say 'forget about it Kathleen for now... there's nothing you go do, and move on'... but you can't. It's constantly there - it's in your mind all the time.
"When you get to that 12, 13, 14 years, then you're thinking if the next one will be the one he gets out."
Kathleen said she's "not naive enough" to think her ex-husband will never get out, but there's a need to be realistic about it.
She also believes the rehabilitation process of day trips and other concessions should only begin a year before release.