I dont know any child or person who meets every criteria for any condition so dont worry about her missing a few signs.
The key thing is that you have found strategies that are helping, I would continue to use them and keep a log of what you are using and how it helps.
We stopped sending Dd3 to school in June which was the 3 term of yr 7. We did move her to a different primary school in yr 3 due to her having massive meltdowns on a daily basis and being very unhappy.
Her first school didnt recognise her needs at all and just treated her as a quiet child who lacked confidence which is so totally not her at all!
Her second school were better until she fell apart in yr 6 and then they had no clue how to help her so instead of trying known strategies they just didnt do anything. That approach was also used by the secondary school!
I was worried about how we would cope with home ed but now we are doing it we love it. Our days are calm despite being busy, we dip in and out of home ed groups and meet ups as and when we choose to, we do lots of real life learning and lots of practical and physical stuff.
We are not doing much traditional academic stuff but I can still say for certain that Dd3 is learning.
Anyway, whatever you decide has to be right for you and your Dd.
Good luck 