J.H.
Regarding your preschool age child--I'm a teacher, and I find it much more important that a child learn to identify lower case letters and to identify them by sounds rather than the name of the letter. It makes for a much easier transition into decoding (sounding out) words, so as you're working with her be working on the sounds of the letters too. Regarding the other issues, I totally agree that it is up to a professional to diagnose any disorders. Most pediatricians can provide you with a questionnaire that will get you started in the process of testing. With that said, many of the symptoms you describe also describe sensory integration disorder which is often mistaken for ADD or ADHD. Do some research on the topic. It is very interesting and there are sensory diet activities you can do to help the symptoms.