things like how important is routine to you, how do you cope with change but she didn't flag
questions like these bug the hell out of me!!
That is not the correct way to talk to a suspected autistic person
let alone a teenager, why are they expected to be that self aware ??
I'm an adult (albeit autistic) and even I can't answer questions like that,
I don't sit there and analyse myself on how I react to change nor do I take mental notes on my routines..
also this
people with ASD are purported to have deficits in basic self-awareness and introspective capacity !!
we often lack theory of mind, so a lot of autistic people can be rigid in routines but we don't necessarily realise that we do have routines, until someone close to us points it out .
small example in the GP today I found it really difficult to describe my stomach pain because I don't feel pain like other people,
describing how I am feeling, or any symptoms is a nightmare for me
and I end up sounding like an idiot
because I lack the self awareness, and also converting what I am feeling into words, very difficult
so its easier to just answer shortly
so please do not rule out autism for your dd because CAMHS are NOT specialised in autism, its better to get someone that specialises in ASD to evaluate her.
A lot of the things you describe sound like executive dysfunction,
she might be avoiding hygiene because of sensory issues,
as disgusting as it sounds, sometimes people with ASD feel comfortable sitting in their own funk because they lack the self awareness
and its also preferable than going into a chilly bathroom, getting their feet wet, being stabbed by splashes of water, the assault of strong soap smells , gagging on toothbrushes..
the room eating could be a comfort thing
but also could be that,
people with ASD have poor interoception, they aren't often able to tell if they are thirsty, hungry, full, need to go toilet etc
so it could lead to kids "stealing" food, over eating, and skipping meals only to binge later because their sugar level is low.
poor interoception is also linked to the constipation,
ASD children almost always have constipation issues starting very young for a number of different reasons
just try to understand that she cant help being like this and she's not lazy, she just needs specialised help,
if you need to keep prompting and reminding her to take care of her hygiene, that will definitely help her short term, until she can be evaluated.