You should have an ER nearby where you can take her. Is your daughter developmentally disabled? I ask this because you mention washing her hair for her. Also if she is taking any medication find out if this could be a side effect of any of them.
Or go to one of the minor emergency centers. They are cheaper places to start. It costs me a grand just to walk into a hospital so I start at a minor emergency place if things don’t appear too serious.