One major question I've always had about this case is why in the hell the killer made the girls, and himself, cross the creek. JH told us all the reenactments are inaccurate.
What if RA made the girls go DTH, and right there in the woods below the bridge, made them undress and whatever else.
IDK. Likely, L's phone was not in her hand, but somewhere on the ground. If, by chance, they were still there at 3:11 when L's dad called her phone (or even just anyone called), maybe the phone ringing, and possibly L saying her dad was looking for them, freaked RA out and he was worried he'd get caught, so he ordered them to toss their clothes near the water, cross the creek, killed them and tried to hide them, then tried to sneak out through the woods, up to the road, maybe through the fields, all to avoid the trail and L's dad.