I know some of the extended family. The money and fame had nothing to do with it. Gaddy had anger and jealousy issues. He wanted Valerie to never speak to her ex-husband again. However they shared children together and did their best to co-parent. He killed her in a rage filled moment of jealousy confronting her about speaking to/being around her ex-husband. At least that's the part of the family I know's thoughts about all this (it was almost a decade ago.)