I actually learned this yesterday while doing some mandatory training for work (Oliver McGowan Mandatory Training on Learning Disability and Autism). It was actually really interesting for mandatory training for a change and actually provided me with skills i can use in and out of work!On the topic of ADHD, it is plausible. However we (I have it too) have sensory issues. Thats more of an autism thing.
I definitely wouldn't be surprised if she's going to try use that as content as others seem to have been.I think she’s seen it’s quite a social media trend for mum influencers to talk about being overstimulated and she’s just trying to be relatable and get the engagement.
Being a parent definitely does have overstimulating moments, generally it's because the parent doesn't know how to handle a toddler being a toddler, unless it's a page about actual ADHD/autism etc pages sharing information. There are some brilliant Insta pages about to handle yourself and your toddler in situations like these or how to try help minimise them. It's a shame she doesn't just read those rather than share an essay on her her stories of how tragically difficult it is to be her.