Special education coop may be used to provide consultation to the regular or special education teacher. Itinerant level services might be appropriate - itinerant teacher from coop may come 1 x month or even less frequently to review progress of child. Can also use technology, so either child or teacher does not need to travel. Might want to pursue which rural districts use technology to provide special education. For years this has been an appropriate means for providing homebound instruction for sped students.
Districts have the requirement to advocate for children.
May want to work with your social services or court system. Again, identification as sped does not mean that child must receive services outside the classroom by a sped teacher. Can be in the regular classroom under the regular teacher with consultation from a sped teacher via technology. Let me know what you find.