Kate Gosselin publicly called her son Collin “mentally ill” while responding to ongoing allegations of abuse made by him, escalating their family tension just months before the release of his upcoming memoir, as reported by Page Six.

In a series of TikTok comments on Tuesday, Kate, 51, addressed the claims while sharing her usual updates about her rescue dog, Koda.

@kate.gosselin Day 48 update on our #rescuedog #Koda (who is currently in training with @MeccaCanine ♬ I Deserve This Calm - CHARLES THOM

When a follower expressed sympathy and said she understood being “constantly disparaged and lied about” by an adult child, Kate thanked her, replying, “Thank you! YOU understand. Sadly, only parents who have a mentally ill child understand!”

The former reality star continued by adding that it was “so tough” to deal with the situation and that she was “learning that [people] have NO ability to understand unless they’ve been through it themselves.”

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One day earlier, another follower had commented that posts “have to be filtered.” Kate responded in agreement, writing, “Yep! No hate or ridiculous accusations! We speak honestly and accurately and are a positive, uplifting group here!”

Neither Kate nor Collin’s representatives were immediately available for comment on Tuesday.

Kate’s remarks surfaced just as Collin, 22, promotes his upcoming memoir, “In the Shadow of Eight.” Earlier this month, he revealed on social media that the book would expose “the shocking facade of his picture-perfect family.”

Collin has since continued making pointed social media comments about his mother.

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On Saturday, he reshared a post about the memoir featuring the headline, “Kate Gosselin ‘spiraling’ ahead of estranged son Collin’s bombshell memoir: ‘She knows it’s about to hit the fan.’”

On Tuesday, Collin took to Instagram Stories to expand on his claims, writing, “Never forget the fact that my mom would write in her diary how she ‘had to pray to God to stop hitting me’ (this was while I was 2 years old by the way).”

He added that bringing these stories to light was important, teasing the memoir’s October release by saying, “And this is why using my voice to put these things in the light is so important.”

The disagreement between mother and son also extended to Collin’s previous challenge to take lie detector tests regarding his claims.

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When a social media user recently suggested Kate sue for defamation, she wrote, “I can’t bc I’m a public figure. Rules are different, unfortunately. Or I def would!”

That comment referenced Collin’s interview last year, when he told the US Sun that he wanted both himself and his mother to “be hooked up to lie detectors” to address his allegations.

“For me, I have nothing to hide, I want to ask her these questions,” Collin said in that interview.

Kate has denied her son’s claims, while her daughter Madelyn has publicly accused Collin of “physical violence and hate speech.” Reports have also described Kate as “spiraling” as the memoir’s release draws closer.

Collin has long been estranged from most of his siblings — sextuplets Aaden, Joel, Alexis, and Leah, and older twins Cara and Madelyn.

After Kate’s divorce from Jon Gosselin in 2009, most of the children remained with their mother. Collin and his sister Hannah moved in with their father in 2018, though Hannah reportedly attempted to reconnect with Kate in recent years.

Last August, Collin shared a message directed at his siblings through TikTok, posting a throwback image of them together with the caption:

“Born to be a team, us against the world…” followed by, “Forced to do it alone, and wonder every day what our lives could’ve looked like.”

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