Yes, I think EK did tell her. She may not have known the exact bridge, but she had to have known it was in Maple Hill for the grandpa to know.Well if you're saying she knew where Mariah's body was placed someone had to tell her if she wasn't there to see exactly where EK put her.
And didn't the boys go to school the morning when they notified LE that Mariah was missing? So no problem there with the boys possibly telling at the school, she didn't keep them away from other people if in fact they went to school that day?
I think they made sure the boys had a 'version' before they left the trailer next morning, whether they were going to school or somewhere else. I doubt whether they had that version ready when EK left to dispose of Mariah.
There was some commotion in the trailer at around 11pm-midnight, that much I think we can treat as true from everyone's versions put together.
Son said that around midnight Mariah was crying, KW or EK hit her, either he or they didn't know if she was dead, and KW told EK to get rid of her.
KW said that around midnight Mariah was crying and she told EK to deal with her.
EK said he told Mariah to go back to bed.
It seems pretty obvious to me how the son's version was being manipulated.
There also seems to be a difference in the sequence - the son says Mariah cried, then something happened to Mariah (she was hit) (when did she stop crying?) before he heard KW saying get rid of her. KW says Mariah cried and she asked EK to handle it.
On the son's version KW was involved (hit her? decided to get rid of her/knew they were in trouble). In KW's version she didn't see Mariah after she put her to bed, so she's calling from another room.
The possibilities are narrowing, but I'm still pondering.