Penelope Jackson wrote a confession note saying “I accept my punishment" and "may he rot in hell” after stabbing her husband to death.
The 66-year-old killer jotted down the message after using a kitchen knife to stab David Jackson, 78, three times at their Somerset home in February.
She was jailed for a minimum term of 18 years after being found guilty of murder by a jury at Bristol Crown Court.
Her handwritten note titled “confession” was pictured following her sentencing for the murder that followed an argument over the couple’s dinner.
It was a crucial piece of evidence for the prosecution in the trial and was directed to a potential jury.
It began “Self defence/Pre Med. You decide.”
Then the full message read: “To whom it may concern, I have taken so much abuse over the years. Look at my records in Germany, but he was a good daddy.
"However, the mask slipped tonight and that was unforgivable. I accept my punishment. May he rot in hell.”
She also bizarrely wrote in brackets “sorry about my spelling”.
The argument had started over a serving of bubble and squeak that their daughter had brought them as a birthday meal.
Mr Jackson phoned emergency services when he was being stabbed and the recording of the call can hear him scream as he was knifed for a final time.
She continued: “I’ve killed my husband, or I tried to, because I’ve had enough.”
Then when police arrived at the property she again confessed to stabbing him saying “I’ve had enough”.
Jailing her on Friday afternoon, Judge Martin Picton remarked she had shown "not a shred of remorse" for the murder.
Delivering the sentence in the same afternoon, Judge Picton told Jackson: "Despite professing to still love him, you sought to portray David Jackson as a monster.
"Whilst there was no doubt, as in any marriage, points of friction that the lockdown would have exacerbated, I have no doubt that he was nothing like the person you have claimed."
He continued: "You took the life of another human being.
"That is a terrible thing to do and it represents a burden you and all the other family members will have to bear for the rest of their lives.
"Their memories of (David Jackson) will always be tarnished by the manner of his death and by the way you sought to portray him."
