From the time Sergio gave me the full hour nest video, I and quite a lot of others who have heard it, are convinced that we can hear another second female voice who isn't Liz, speaking to Sergio at certain points. Theres police reports where witnesses and stating that the mother in law was staying at Liz's, but that's put down to another error in the report.
Just prior to the audio in this clip, Sergio is talking about telling Liz she should have her mom, or his mom,.there with her. I assume that's how the deputy is referring to when he asks "Have you spoke with her this morning?" (assume, and assumptions are sometimes dangerous)
Well, not so sure anymore. I mean let's say Sergio's Mom was ...