Hi IQuestion, I just read the document you cited. The first report was written and signed by Dana Gary, the ME investigator. Ms. Gary was the one who arrived with the ME at night 7:14pm (19:14 hours). When Ms. Gary wrote the paragraph called "Antemortem Events", she was saying she herself had an interview with Det. Tsuida, ME Lucas, and other detectives.
So it looks like Det. Tsuida's search warrant indicated she did arrive early Wed morning 09:20 hours. However, Dina was also physically present at the mansion that Wed morning when Rebecca's body was found as well. Based on photographic evidence, I believe unequivocally that the large woman with curly bangs carrying a large black bag entering Spreckels mansion Wed morning in the photo was Dina. Besides the different body frames, the large woman in the photo was wearing a completely different outfit than the two suits I've seen Det. Tsuida wearing on Wed and Thurs pics/videos. Also, an insider said that Dina was eyewitnessed at the crime scene Wed morning.
I think the only way to resolve this issue is to directly ask Det. Tsuida during the civil case, perhaps even during a depo.