My thoughts/opinions/gut feelings are....
I believe there were 2 perps, both males, probably in their 30s. I think they were both well known to Lyric, Elizabeth too, but Lyric more so. I feel Lyric was the target. I feel Lyric was told in advance by one of the perps to meet them somewhere at a certain time that day, for whatever reason they mave have given her, such as we or I will take you for ice cream, take you for a ride, take you to the lake swimming, or whatever it may have been. Why do I think Lyric was the target, for a couple reasons...1) Lyric more than likely had witnessed and or been the victim of many things such as drug use/abuse, physical abuse, sexual abuse, domestic abuse, something of the like. 2) If Lyric would have been abducted by herself, I think it may have made it way more obvious of who the perps were, so I truly believe Elizabeth was a victim of circumstance.
Why did these perps do this? I feel they benefited in more than one way (at least in their sick, criminal minds anyway) They were both at the time of the abduction (and probably still) facing rather extensive prison time. This abduction not only eliminated a very important part of history and their past Lyric but also extended the amount of free time that they had, and also they really had/have nothing to lose, as the perps end results will still be the same (no matter how many innocent lives they take in the meantime)...but they have enjoyed the extra free time for now.
I do strongly feel there are others who know who did this to these two innocent little girls but they fear for their lives and others around them and therefore will not come forward
Now I will get ready to hide behind brick wall because I'm sure there are at least a few who will pick my theories/opinions/thoughts to pieces, piece by piece, but it is ONLY my theory, my feelings, my thoughts