The 911 call has always struck me as off for 2 reasons. If I found my BIL and a friend in that condition I would have ran screaming the ten steps to my nephew's trailer and banged on the door to alert them and to tell them call 911 (since she didn't have her phone on her person) So my 911 call would have been more like Help, they're all dead not just 2 of them. The other thing that nagged at me was why would she even mention the key? Again, if it were me, who the hell cares how I got in? It wouldn't even register as an important detail to mention during that call. Only later, when I was questioned would I get around to insignificant details. (Insignificant to me, as an innocent person traumatized and in shock) If all of their cars are still parked outside, I don't even know that I would be concerned enough to use the key without knocking on the door for a while, going next door to ask if HG if she knows if CR and GR are around since their cars are still here.
It could be, and really may be, that she edited out and added a lot of what she did when she arrived because she didn't want to incriminate herself if her duties did include tending to the shed.
If the 911 call is suspicious to me, it may have been suspicious to LE and that is why they have always felt she knows more than she is saying. LM did say mention something about LE and the statements BJM made about what she when she first got there.
I'm not LE but I was raised with a family member who was a homicide detective in a city that had its share of homicides. I heard a lot about his line of work, investigation techniques, psychological techniques, and over-all, how LE solves murder cases. This was long ago, in the 1960's, but my relative's team had an excellent solve and conviction rate in the days before dna testing was available and some of the cases were incredibly complex.
Based on what I heard from him and how he and his team went about solving murders, my thoughts are that LE had to question her the following reasons:
1. She is a close family member of the victims.
2. She found four of the bodies.
3. She contaminated two crime scenes by entering them and walking around.
4. How did she know Bentley was in FR's trailer and why did she she enter the second trailer after finding CR SR and GR murdered, especially when LE was on their way?
5. Why were the two other people with her so early in the morning and was this out of the ordinary or had she brought them with her before as she did her chores? Did either of her friends enter any of the homes?
6. What did she know about the grow operations?
Since they have given her two polygraphs (according to BJM), they apparently had a lot of questions for her. As for whether she passed the polygraphs, we only have her statement that she did.
As for suspicion of JM, we don't know for sure if he walked around in DR's home. I believe his wife reported that he opened the door, saw Dana and backed out. Again, he is also a close family member and he discovered a murder scene when LE was either on their way or had just gotten to the scene.
From LM we know now that JM sent a text to JW that night, at some point in time. We also know from LM that JM failed a polygraph recently. My guess is LE knows what was in that text message and exactly when he sent it. JM's wife was also texting DR at some point in time before the murders.
I know LM is extremely upset that LE continues to question his family, but those closest to the victims, especially close family members, are always first to be questioned when people are murdered. They have to be ruled out so LE can move forward in their investigation.
I don't for one minute believe that LE has some secret agenda to harass the Manley family or to try to pin a murder charge on JM. I do believe they have reason to believe that some members of the family have not been forthcoming with information and that could include inconsistent statements and/or not being able to satisfactorily explain certain things that are pertinent to the investigation. We don't know what LE knows. They aren't saying.
As LE has stated several times, they are being especially quiet about the case and this is taking a long time because they only have one chance to get it right and they want a successful prosecution when the time comes.
Edited to add: DeWine is a very ambitious man. This is the biggest murder case in the history of the state of Ohio. Is he going to put his reputation and future career on the line to enter into a conspiracy with some locals to harass the family of the murder victims? There's lots of talk about corruption and I'm not local, but I do know that there are lots of people involved in this case and it would take a huge conspiracy with many people to try to falsely hang a murder charge on an innocent person. All it would take is one person who knows of the conspiracy to talk (and that usually happens) and it would blow this sky high and DeWine would be ruined. I don't think he would take that chance, personally.