In the first hours of Summers disappearance Ronnie was quoted, and I remember seeing a video clip also, saying "Siblings saw Summer go to basement to play, siblings were last to see Summer"Ronnie Lawson is quoted as saying it is what was told by the brothers. Not CW,or CH,or DW. I don't think that's mistake,or miss quote. MOO
The basement door is only way out of basement without coming back upstairs, this is why the assumption was made that Summer went out basement door.
When I look for the video clips or the comments made by Ronnie Lawson I'm not able to find them, I'll dig later to see if I can get a link of screen capture of these statements.
Remember, HCSO and Ronnie Lawson were on scene immediately, INTERVIEWED AND TOOK STATEMENTS FROM EVERYONE PRESENT, BEFORE TBI OR FBI ARRIVED ON SCENE.