The 23-year-old killer was reportedly forced to endure the barrage of hate during a visit from family as she began her life sentence.
According to the Sun Online, the mum from hell was spat at by one woman, while others jeered and screamed abuse at her in a visitation room in HMP Foston Hall, Derbyshire.
Cousin Kerry Porton, 34, told the Sun: “As Louise was waiting there were three guards around her.
“When people worked out who she was everyone was shouting ‘scum’ at her — even the visitors.
“She eventually ended up sitting facing the wall with someone holding her hand.”
Jail staff are reportedly monitoring Porton over fears she may be attacked.
Porton murdered her children because they “got in the way” of her sex life.
She was caged for life after she suffocated Lexi Draper, three, in January last year before killing 16-month-old Scarlett Vaughan two weeks later.
Porton – who dubbed herself Lollypop – was convicted of murdering her two kids by “squeezing the life” from them in a “calculated decision”.
She even offered to perform sex acts for cash as Lexi lay dying in hospital – and joked she had “two now down to one” before Scarlett died.
Her cousin revealed Porton was violent and manipulative – often attempting to “try and hurt us without people seeing”.