Your Greatest Responsibility: Understanding
Doing therapeutic activities with your child at home is important. Researching opportunities for your child to pursue special therapeutic activities outside your home is important, too. But the most important thing you can do for your child is the one you do every day just in the course of being a good parent, and that is understanding your child's special needs and accommodating them.
Never discount the value that simple understanding has to your child. The benefit of that is far over and above any therapeutic work that you do, and if you do nothing else, you will still be helping. Interpreting behavior by its sensory basis and not as a deliberate and punishable offense will give your child the space and freedom from stress that she needs to do the work of bringing her sensory systems into line.