Yes, I agree, they do seem to keep going back there, probably to verify the initial story (my assumption?). But I guess I just *have to believe* that this many days into the investigation, they have that verification. I wonder if they are looking for other activity to focus on, other cars in the neighborhood, someone targeting this daughter and/or SIL. Or, I suppose you could say, a frequent visitor to their house could indicate some level of "planning". Hmmm. Wouldn't they start with the most inner circle and branch out? I hope they're "branching out" now and have eliminated the "inner circle". Which should have been done IMO within about a day or less.
Your last part, people kill their spouses, remove, etc... Yes, because they are hiding evidence IMO of something that occurred in anger and heat-of-the-moment, not for inheritance or money purposes was my point. In this case though, we have a person on camera coming to the house hours after NG (allegedly) arrived home, when she was (allegedly) sleeping. So, my theory is based on that she was in fact at home at that time. So if it were the family member in question, whatever state NG was in at that time, they would have returned to the house at that time (of the video) to remove the body, if that was the situation.
Thank you!