Ava and Emily have tombstones in Weeping Hill. Assuming Felicity is someone we'll meet later on, that's 3 people that are hinted as dead or are going to die. I don't think it's another Tristan situation seeing as how the other characters are all able to interact with each other... Really curious as to how that will turn out, because I'm fairly certain they're there for foreshadowing.
Thanks for the enjoyable experience.