Complex sentence: She claims to have smelled the stench of decaying bodies and that she was told that the smell was coming from Sowell's stepmother and when she moved out that the smell was from Ray's Sausage Shop, located next door to the Sowell residence.
Split into simpler sentences: She claims to have smelled the stench of decaying bodies and that she was told the smell was coming from Sowell's stepmother. When she moved out, she claimed that the smell was from Ray's Sausage Shop, located next door to the Sowell residence.