So tinfoil hat time from me. What if she did indirectly try to tell them about Meteion? There's been two things that have been bothering me. One is the behavior of Azem. The whole they did whatever it is you think your Azem would have done is the correct answer, but we also know what Azem was doing we just can't tell you at this point in time as it would spoil other things answer has never sat well with me. The other one is why did Zodiark make the new life aetherical thinner? Who or why did he choose to do so? Was it because he couldn't make new life be as thick as Ancients? Which could lead to problems with the whole switch a bunch of thiner souls for a bunch of thicker souls idea. What if Venat and Co got Zodiark and mostly Elidibus to agree to make them thiner so they could be used against Meteion? Or if no one told/asked them to make said new life thiner then maybe the whole "leave the care of the star to this thiner younger life" line was supposed to mean that her group wanted to again use them to go find and battle Meteion? And the convocation for whatever reason didn't ask for clarification or they did and didn't get a clarification. Would explain why there was a need for a Hydelean Zodiark fight or why it felt pleas fell on deaf ears. I know there's a lot of holes and that some won't even agree with this theory and that's fine.
To the well the WoL could just find the unsundered versions of their friends thing. Not all of their friends were sundered Ancients. A few of them had bared witnesses to multiple star showers and never awoken to the echo which seems to be the tell tale sign that you used to be an Ancient.
