Complex sentence: After authorities removed Genie from Jean Butler's house they returned her to Children's Hospital, and because an alternate living arrangement for her had not yet been located the Riglers then decided to take control of Genie's care.
Split into simpler sentences: After authorities removed Genie from Jean Butler's house, they returned her to Children's Hospital. As an alternate living arrangement for her had not yet been located, the Riglers then decided to take control of Genie's care.