I have children in this age range (a 7month old and a 3.5 year old) and I'm calling b.s. on the story of the three year old opening a door and letting the 1year old out. My son (3.5) knows better than to open a door without one of us close by. He tells me about everything "sissy" is doing. It's the nature of a 3 year old to be chatty and narrate situations. "Sissy crawling. Sissy messing with my blocks. Sissy crying" etc. I have a really hard time believing the 3 year old would see their sibling go out a door and not tell anybody Also on that note, I think it's borderline neglectful that nobody heard the 3 year old open the door. Yes, mistakes happen, but how do you just not notice a door open for however long?! Does the 1 year old sleep throughout the night? My kids both still get up at various times to be tended to (feeding, nightmares, water) so you would think the boyfriend would have opportunities to notice the child wasn't in the home and the door was open.
IF that poor 3 year old did see something though, I'm not sure they would know something is wrong, depending on situations they have been exposed to prior. Example: I'm not sure my 3.5 year old would see blood and know what it was. He would likely think finger paint or something similar b/c he has never saw violent movies/situations in real life. Is it possible the child saw something but didn't understand what they saw? What if the baby was strangled- they child might just think it was a big bear hug (I'm sick just writing this comment already, ugh). Or even if they did recognize something bad had happened, human survival instincts may have pushed that memory wayyy into the back of their mind, forgotten, or placed in the bad dream category. I have a hard time believing that if the 3 year old witnessed something that they aren't talking about it though, even if it's with limited vocabulary and understanding. "Somebody gave sissy big hug then she quiet. "Somebody got paint on sissy" "Sissy asleep after bath". My son would be speaking his truths b/c it's the nature of that age to tell all about their little lives.
I'm sorry if these things have already been discussed at length. With two small babes I don't have time to keep up 100% on this thread, but this is just my 2 cents based on my experience with kids in the age range of the two involved in this case. Hinky is an understatement, I think we all agree there. We don't know what the 3 year old is saying to LE but I hope they are listening for the right clues and asking the questions in a way the 3 year old could understand. I have faith they are but nothing surprises me anymore. Lastly, that age group doesn't know how to keep a secret if they don't want to, you can't threaten or convince them to stay quiet.
My heart goes out to mom and the family in this case. I've been wrong plenty of times before, but I don't think she was involved, quite possibly in denial sure, but not a part of the scheme. I know we can't point fingers but I think LE is building a case, holding their unannounced POI, and waiting for a body to surface. Sick Sick Sick!!! Going to hug my littles and cry now.