I would describe her as super sensitive to sound, she is very good at concentrating but noise disruptions really bother her - she seems to be able to hear *everything* or nothing at all. Like she's missing a filter or something. She's like that with visual information too, she seems to see every detail and isn't always able to pick out the important information in a timely fashion, but it seems easier to deal with most of the time
That thing about drawing letters is interesting, I've always said that dd draws letters as tho they are pictures - we have pages upon pages of " A a " " B b " etc written hugely and decorated beautifully with polka dots and rainbows and such. and, she seemed to need to copy letters *exactly*, there was no flexibility for the minor changes we all make when we're writing.
This describes one of my DDs and we are exploring CAPD (central auditory processing disorder)
She is a good reader though and has good ideas-- but struggles to get them down on paper. She also has hearing sensitivities---her teachers always ask if she has had her hearing tested (yes, it is fine). She has a hard time filtering noises as well. We have confirmation from an OT that she has slow processing speed but they are waiting for her to turn 7 since most tests for CAPD are not accurate until then due to developmental differences. She also has some ASD tendencies (sensory overload, toewalks, etc).
Just something else to explore.