I know you asked what Billie thinks, but I am going to answer this one. I wish LE would find enough evidence to point to something - anything. Or if they already have evidence, act on it. Either haul Shawn in or clear him. Name the other POIs. Redo all the polys - and give them to more people. Question everyone who was anywhere near the house in the week before Hailey went missing. Get the thumbscrews out. Anything.
I am very frustrated. Hailey has been gone a month now, and everyone knows plenty about a whole lot of people... but no one knows a thing about Hailey. Where is she and how did she end up in whatever situation she is in? How are we going to get her back? Why is it taking so long?
Hugs & a nice glass of wine with your bubble bath. This is crazy and it's time for answers.