Another detail we still haven't heard about is - what was a typical day like for Amanda ?
Was this a normal day ? Did she typically sleep in when Davey went to gym ?
What was her routine like ?
Just odd to me that this isn't mentioned.
Another question is - who was the last person besides Davey to talk to Amanda ? If there was someone targeting her church/work related acquaintance, a family member might have had a conversation that would give details. I've not really seen any statements from other family members regarding this topic. Does she have close friend(s) she talks to daily ?
I do think the house was targeted for burglary is very plausible. But I think in any investigation you want to determine if there are any potential red flags or anything odd noted by anyone who is around amanda often. As someone else noted, she has a furniture restoration business, so not crazy that someone related to that business casually gained information about her schedule for that day. ie... hey, can I pick up that dresser at 8am ? will you be home ? -- very possible that she mentions this to her sister or friend and maybe not Davey if he is so busy.
Also, where does this restoration happen ? in her garage ? is it often open ? if someone is aware she is often outside working on furniture etc, then yes, they are aware that she is often home. So if it is normal for her to be home at this time, it does become more likely that someone who cased the neighborhood for BURGLARY - would be like.. uh, not this house.
But we just don't have that very important information from LE at this point. So hard for me to cling to strongly to any theory I have in regards to motives.
Burglary is still very plausible in my mind, but impossible to be confident in that based on what we know. (and more importantly, don't know)