Chelsea Cuthbertson is standing trial accused of killing her baby (Image: Solent News)

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A mum allegedly shook her six-week-old baby to death after complaining he was “whingey,” a trial has heard.

Chelsea Cuthbertson, 28, is accused of killing her son Malakai Watts at her home in Hythe, near Southampton in February 2019.

Police arrived at her flat on February 2 following a call made by Cuthbertson and found Malakai “grey from head to toe.” He was taken to hospital but four days later was taken off life support and died.

The court heard how Malakai’s “catastrophic” head injuries and eight fractured ribs were most likely caused by a “non-accidental injury.”

Winchester Crown Court heard that in the weeks before Malakai’s death, Cuthbertson sent texts complaining she was “sick” of being in all of the time with her kids, and that the baby was “whingey” and “hard work.”

Chelsea Cuthbertson denies murder
(Image: Solent News)

In another text sent to the baby’s father, Cuthbertson said she was “sick” of doing everything with her kids.

The text, sent on January 26, 2019, said: “Sick of being in all the time and doing everything with these kids whilst you f*** off every weekend.”

In another text, Cuthbertson described another of her children as “a little cow” and a “little s***” and said: “[The child] might have a bruise on her cheek tomorrow – the little cow took my glitter eye shadow.

“I went to take her to her bedroom but the little shit was all slippy so I dropped her and she fell on her face but on her cheek side.”

The jury sitting on the trial heard that Cuthbertson had previously given evidence to a family court that she felt abandoned, exploited and left alone with the children and even spoke openly about assaulting her first born child when he was just six-months-old by pushing down on his forehead so hard that she left bruises and he had to be taken to hospital.

She also claimed she did not receive sufficient financial support from her partner as money was tight and the flat often cold.

The flat in Southampton where prosecutors say baby Malakai was assaulted
(Image: Daily Echo/Solent News)

Prosecutor, Sally Howes QC previously told jurors there was an “escalating resentment in Cuthbertson’s “love hate” relationship with Malakai’s father.

She said: “Her resentment and anger reached such a point that morning she took it out on Malakai, squeezing him around his chest, shaking him and then causing an impact to his head.

“Her intention at that time must have been to cause him harm even if the catalyst was to take out her resentment on him.

Cuthbertson previously told jurors that the twins had been asleep when she woke that morning.

She said she went outside to smoke cannabis and then went back inside to wake the babies for their morning feed but found Malakai blue in the face and called 999.

Cuthbertson denies murder.

The trial continues.