I remember early descriptions of her role saying that she helped the VDs understand police procedures and ways of doing things. How sweet and innocuous.
But given what we now know about the VDs and how much we know that we don't know (because they've lied/hidden so much), one can't help but think that she may have had a hand in all those fibers and hairs that weren't analyzed and compared, all those hand prints that weren't checked with the database.
And all the places in the MH that weren't dusted for prints. As if someone was told where to check for just the print they needed to nail DW. Kind of like the searchers went to Dehesa Rd. on a 'hunch.' It's amazing how the hunches just seem to pin one more piece of evidence on DW.
Could Halfman been coordinating 'leads' between the VDs and the SDPD? She would know how to word an interview to justify getting a Search Warrant......
Just wild speculation on my part.
I think DW was only trying to protect his son from the publicity concerning the kids porno exploration, because he never, ever dreamed it would go this far when he said it was HIS porno.
DW was acting like a father, sheltering his own son, but didn't know it was going to be the entire MOTIVE in a case against him.
sw