"Who spoiled her death to Marlene?" 😂 Pure speculation on my part but I think Aerith may have spoiled her own death to Marlene lmao Remember when Aerith went to get Marlene from 7th Heaven and hugged her and she did something to Marlene then shushed her. I believe she may have passed on a few secrets to her. Don't know why or what Aerith did to Marlene but probably knew she needed to do so.
Great point, it is strange that everyone that comes into physical contact with Aerith seems to instantly learn everything she knows (possibly the entire plot of the original game) I hope we'll get the answers in Rebirth in just about 1 month! I'm so excited for it.