likely because the issues with her extended family are the result of the way she's so determined to get an autism diagnosis for as many of her children as possible - regardless of whether that involves pre-scripting and rehearsing her what she plans to say ahead of the assessment, and essentially manipulating the situation to ensure her children recieve her much-coveted diagnosis - and then using it for content, while exploiting her children buly sharpublicly sharing medical information online and totally disrespecting their privacy as a result. she's not going to share the details of that kind of family feud, as it reflects on her badly - especially when she is aware that there are. many people who would agree entirely with her family's concerns.
honestly though, for Zara's sake, i'm kinda relieved she did receive a diagnosis - because whether it's warranted or not, we all know Rhi would stop at nothing to ensure her daughter was diagnosed, even if that involved dragging Zara through endless assessments and coaching her on how to behave and what to say - because she was so desperate to be able to state that she is a mummy of three children with autism, as she believes it is to her advantage, as it will boost her platform on SM. ensuring she got that diagnosis was entirely for her own benefit - as proved by the clickbait vlog, with a dramatic title and thumbnail.
honestly, i don't much about autism and desperately don't want to phrase this badly, but as far as i am aware, autism affects each individual differently, and whether her kids' diagnoses are all truly warranted or not, they certainly don't seem to be affected or struggle in the way that some children do - so Rhi posing as a self-titled "expert" handing out tips and advice seems somewhat condescending.