DD is very precocious and has continued that way well into secondary school and is predicted top grades across the board. However it's the little mundane things she can't do like go to student reception and enquire about a lost coat.
As a toddler she spoke early and we did sign language too and she could sign sentences by about 15 months. Roleplay games were either reproductions of games we had already played or the plots of books or TV shows.
Lots of her 'quirks' were easy enough to put down as being an only child, she was like a little adult and a fantastic companion, couldn't really stand other toddlers/children as they were too noisy, messy, spontaneous.
Hated hand dryers (still thinks they are the devils work).
Only particularly concerning thing was she used to bite herself if overwhelmed, so hard she left the bite imprint for upto a week.
She never had tantrums, never melted down, used to punish herself on the 'naughty' step if she thought she had done something wrong even though I had never used the naughty step as a behaviour tool.
Food wise she is a real foodie and loves a wide range of food and going to nice restaurants is her idea of heaven - BUT she struggles to eat at school as it's loud or something puts her off her food.
As a teen she struggles with anything that requires imagination and freestyle creativity, brilliantly skilled at anything she turns her hand to and picks things up quickly like art and music but the second she's asked to make something up herself she struggles, although an early reader hates novels and once she moved away from illustrated books has preferred non-fiction, poetry and play scripts.
She doesn't need that many adjustments, quiet time to chill and extra rest time scheduled into holidays and breaks away, she plays sport for the county but we might travel up the night before and stay in a Premier Inn so not too much going on at one time that type of thing.
What I would advise is watch and wait, write anything down that is quirky / unusual whether that may be being very good at something or things she struggles with and start saving for a potential diagnosis should you need it £2.5k at the moment as it's a very long wait on the NHS that way if it turns out an assessment is required in future you'll be ready, and if she grows out of the quirks as she develops you can use it to go on holiday. Most girls start to struggle when they start Secondary school. However even with a diagnosis you just get a sheet of paper with a few recommended books and waved on your merry way, it's useful for validation but in most areas there's not a lot of support unless you pay for it privately.