Complex sentence: Simone Greggs, a mother of an autistic boy, filed a lawsuit against Autism Speaks for disability discrimination after her job offer was rescinded, alleging that it was due to her asking for an accommodation on behalf of her son.
Split into simpler sentences: Simone Greggs, the of a child with autism, filed a lawsuit against Autism Speaks for disability discrimination after her job offer was rescinded. The suit alleges that she lost the job offer due to asking for an accommodation on behalf of her son.