Jenn,
The short answer to your question is yes, you should be doing much more for your daughter than the school is offering.
The long answer is, schools are required to make your child functional enough in school so that she can access an apprpriate level (for her) of the general education ciuriculum. They are not there to diagnose your child, they are not there to treat your child's developmental delay, and they are not going to ever, ever, ever provide all the services that she needs to maximize her poteintial.
Please get your daughter to a Developmental Pediatrician for a full developmental, educational, social, emotional, speech and langague, motor and sensory, and neurological evaluation. You should never count on the school to tell you what is wrong, or what needs to be done. They are educators, and they are only concerned with meeting the standards of IDEA procedudrally, and frankly, it is your responsiblity to find out more than the school knows because this kind of conidition is effecting far more than her ablity to learn, and that is all the school should and can concern themselves with.
Things are not going to change naturally. I have been there, and so many families I have worked with have been there too, there is a great deal of medical treatment, therapy, and hard work ahead of you, and the sooner you are an expert in what is going on with your daughter, the better off she will be. Schools can be a great tool and help to you to supplement her treatment plan, but you need to own the evaluation that contains her diagnosis, and use your more comprehensive evaluation to hold the school accountable for providing appropriate educational services for your daughter that will compliment her comprehensive treatment plan.
Call the nearest childrens hospital on Monday moring and make an appointment with a Developmental Pediatrician.
M.