Waterstones experience with disabled child

[Reasonswhy]

My child has a regressive neurological condition that makes her enjoy things much younger than her
age (9). We went to Waterstones today after a difficult medical appointment for a nice treat. The shop was deserted so it was calm and pleasant and my daughter headed for her favourite section, the young children’s books. She was enjoying looking at them when a staff member came up and said loudly “you’re far
too old to be reading them” and my daughter’s face just fell. I was so shocked, I wear a sunflower lanyard to alert people to a hidden disability, but even if she hadn’t seen that, surely it’s not right to comment on what anyone chooses to read? We just left
as my daughter was upset and I didn’t want to add to that by taking on the ignorance of the staff member in front of her and explaining the condition, but I’m hurting for her as it was meant to be a nice treat after a horrible blood test snd she walked away feeling judged.

https://hdsunflower.com/uk/sunflower-armband.html

An arm band might be a low-risk but helpful accessory?

DDs are adult/almost adult now. Honestly, I'd say it's about this age that I didn't need to mention that DD1 had a disability anymore. 5-7 years old used to get the tuts - 'not a toddler anymore!' then 7-9 ish got the side eye 'hmm....maybe there's something not quite right about that kid...' 9 onwards, people clocked immediately. So DD1 (19) doesn't wear a lanyard because she's obviously disabled. It comes across in her walking, in her voice, in her face, in her posture...very obvious.

DDs 2&3 have ASD. DD2 is more classically autistic so the fact that her headphones are glued to her ears and her very passive demeanour is a giveaway. DD3 is more subtle. They tie their sunflower lanyards to their backpacks.