I just posted on the "does anyone think RH is innocent?" thread explaining why I thought HE was guilty as sin. But I'm not seeing any kind of smoking gun for LH, and while I think it is possible she was in on it, I also think it is possible she really is innocent. A few points:
1. Maybe it is because I belong to a faith that doesn't have open caskets or viewings of the body, but I just don't find it inconceivable that a loving mother wouldn't be able to bring herself to look at her child's body. I'm also not going to judge whether or to what extent she was grieving - people are all different.
2. Lots of religious people use the "he's in a better place" rationalization to console themselves. LH was, admittedly, taking it to another level - one that I find absolutely absurd -- but I think it is enough in line with more common religious discourse that, again, I'm not going to take it as evidence of guilt.
3. If RH really did text LH asking her if she had picked up Cooper from daycare, I'm not actually sure that jumping to "Ross left him in the car" is that illogical. The text means it isn't possible that RH took him elsewhere, already picked him up, got into an accident on the way to daycare in the morning, etc. The daycare hadn't seen him all day, so it isn't possible that something happened to him after being dropped off. There are probably some other explanations other than RH leaving him in the car, but none that I can think of that are more plausible off the top of my head. If LH really had recently watched a video about hot car death or had other reason to fear leaving him in the car, that would explain why her mind jumped to that. Which brings me to...
4. The fact that she, too, claims to have had a specific fear of leaving her child in a hot car is pretty suspicious, at first glance. But when I thought about it, if RH had been planning on doing this, it would be to his advantage to plant the thought in LH's mind that this was something to worry about - that way, she would be able to perpetuate the story that not only could Ross not have done this intentionally, it was something they were terrified of and had talked about, which seems designed to make RH look like a concerned dad who made a terrible mistake. So, even if LH wasn't in on it in the slightest, she might well have been brought to think about the subject by RH.
Granted, I can't think of a great explanation for "Did you say too much,?" although that, too, may have been in response to something RH said that makes it a more plausible statement.
I've also been thinking about the fact that there's a lot of middle ground between "wonderful, loving mother" and "baby-killer." Maybe she isn't as grief-stricken as the rest of us would be. Maybe she's a cold, emotionally stunted person who isn't capable of feeling the depth of love that others are. Still doesn't mean she murdered her son.
Again, I still think she might be guilty. But based on this evidence, I wouldn't arrest, let alone convict her.