this one's absolutely spoilers kekw
Okay, so I ignored the kid at the start, convinced the one lady to tell me and aeran about the grey woman I forgot the actual name of, and then she took me to rayne, who told me some more stuff about what could've happened to fisher, then I went to relics and runes, taking over and interrupting aeran while intimidating the shop owner, then I grabbed some stuff from the shops and I'm now at where you put what you've found together with Aeran, and now there's on option to go to marshwall to investigate further, so I genuinely think there's a chance here
Edit: there's also what I assume is an option to go to the viridian lady, so you may actually also be able to get the chalice to hera too
Edit 2: Im playing somebody with Aeda ancestry trained by sero just incase that has an Impact