I have a son who has DCD, this means he has dyspraxia and ADD, he also has low muscle tone, slightly different from you daughter but my story is similar.
I knew from early days my son had something wrong, he screamed constantly, never walked till well over 18 months etc etc By nursery i thought it was obvious, he was really struggling with all things, especially art work etc. I pleaded they kept him out of school for a year but it was refused.
he went to school and was always behind, couldn't write or read, bad at sports, poor attention, what actually hindered my sons diagnosis was that he had no behavioural problems just like your daughter everyone likes him and he is very well behaved,
anyway after fighting with the school for 2 years I eventually moved school
as soon as he walked through the door, tests were run, OT and LT were called in and a diagnosis was made within 6 months.
He is 10 and does all his written work on a lap top, he gets LT and OT regularly.
So keep going, don't give up, there is people who will help you but I am afraid you have to fight to see them
My son is doing great, he is a little behind his peers due to the time spent trying to teach him to write and read. but he is making progress and has a bright future ahead.
If you need to go into school everyday do it, do not worry about harassing people as some people need to be harassed and take all the help they offer,
there are so many kids like this and it is so well recognised that it should not hinder your daughter in any way