It seems we are heading towards the revelation that Shiori doesn't actually want to eat Hinako or that she's trying to make her want to live for different reasons than those she initially offered.
Asuming the best of intentions on Shiori's part, her plan is to trick Hinako into being happy with life again and then fucking off to God knows where so she doesn't have to keep her "I'll eat you" part of the deal. But again, that's asuming the best and, even if Shiori's goal is to keep Hinako alive, I doubt she isn't looking for something else too.
Anyway, interesting talk between Shiori and Miko. It's nice to know Miko is aware of Hinako's death wish.
I do agree that she wants her to be happy and wants her to live... Almost like maybe her parents made a deal with Shioroi to protect their girl and make sure she lives a long happy life right before they passed away and knew they were going to be leaving their daughter alone from here out.
However It could 100% be yes she wants her to live but I do believe near the start of the series she explained that when she was happy she would taste better? Maybe I'm misremembering. She did say she wants her to live a long happy life though before she eats her.... So it could just as easily she wants her to live until she's old and eat her then lol.
And 100% Ayame is either a monster or a god of sorts and Shiori gonna have to choke a chick.