She could qualify for an IEP under the diagnosis of learning disability, speech impaired, or other health impaired. Just like ASD diagnosis in itself won't qualify you for services, you can lose the educational diagnosis of autism and still have an IEP if you have a disability.
Here are the categories:
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autism, deafness, deaf-blindness, emotional disturbance, hearing impairment, learning disability, mental retardation, multiple disabilities, orthopedic impairment, other health-impairment, speech or language impairment, traumatic brain injury or visual impairment including blindness.