OP please contact the head office about this or at least the store manager. If it happened recently I suspect it’s a member of the Christmas temp staff team that have been recently hired and aren’t taking this too seriously. I struggle to believe she thought that was good customer service or a kind thing to say to a random kid.
I’m a former educator, have briefly worked in a bookshop and am now a traditionally published children’s author. Also happen to be ND.
I would never have said that to any child I worked with in schools or a customer. It’s very unusual for a bookseller to say that.
Firstly, picture books can be read by anyone including adults . The lanyard issue is neither here nor there. Yes that may make it worse but it was wrong of her to say irrespective of what disabilities or ND your child has and what age she is . Secondly, if she did want to steer your daughter to middle grade (8-12) books she could’ve said more subtly “ do you need a hand looking for new reads? If you tell me what books you already like I can give some suggestions. Or are you happy just to browse yourself? ” And finally - as others have said - it could easily have been a gift she was looking at for a younger family member.
When I was a kid I was encouraged just to read widely. As a 10 year old I was happy to read Goosebumps one day, Roald Dahl another day and George Elliot the next day! I was an avid reader and obviously pursued my dreams of writing as an adult.
Nowadays too many adults are trying to micromanage exactly what children read. Yes some texts are inappropriate for kids such as some (but not all) books aimed at older teens or adults. And steering kids to read certain books to challenge them or whatever is fine, but when you’re shaming a kid for their book choices being “too young” it’s unhelpful .
Especially when that child is a stranger and you don’t know their reading ability, if they even like reading books or what’s going on in their life. Sometimes when older kids lose a close relative or their parents get divorced for example , it’s picture books on those issues that are used to try and help them rather than them wading through a longer book for older kids that doesn’t address the issue as directly or quickly.