[tinyegg]

You may want to try switching to non-scented soaps, laundry detergent and cleaners. Do you feel or have you been told she has sensory processing disorder? Another thing to try is talking to her, a lot. If you have a wife who works have her stay at home and work with your daughter on meeting milestones. Get whole genome sequencing done. See if she has any issues with methylation etc. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4203003/

Give her Dha and a multivitamin with more bioavailable forms of each vitamin or a whole food vitamin. My daughter will take these along with greens and fruit in smoothie form. Basically, do everything you can.