They are covering something up and I think and have thought that they know Natalee returned to hotel area that night, what happened next is anyone's guess. How hard have these girls been pressed with their discrepancies and there are quite a few if you go back from the beginning?
We don't know how hard they have been pressed. But these are not street hardened gang kids. These are soft girls from a suburb and my guess is if your scenario, where they saw Nat on the beach, argued and she walked away, is true that they have told someone. Obviously Beth doesn't think this or know this or we would have heard.
But they would have no reason to withhold any such information. None. And I doubt they would given the gravity of what is going on.
I suspect this topic has been discussed so very much by all the parties, their friends, their parents, etc, that what one person knew and what they "heard" are all mixed up.
"They are covering something up and I think and have thought that they know Natalee returned to hotel area that night, what happened next is anyone's guess. How hard have these girls been pressed with their discrepancies and there are quite a few if you go back from the beginning?"
If that was the case why is Joran admitting that they left together, went to look at the lighthouse, then he left her on a beach near the Marriott. Even Joran isn't disputing that they were together. It doens't make a difference who saw them together at C&C's and who didn't. Joran has already admitted all this. If your theory that somehow these girls are responsible for something related to her disappearance you would also need to pursue that thought tht Joran is covering for these girls.
I think you are looking for something that isn't there.