Long story short: Ravine is psychic. She can not only see into one's past and future and different outcomes/timelines that they could have taken, she is capable of entering one's consciousness and manipulating their perception, showing them visions, or enter their dreams as either a guide, companion, or watcher. You can read more about the specifics of her psychic abilities on her powers page and basic info.
I will, of course, be open to handling the dream/mindsharing on a case-by-case basis, as it's expected that what she would see/experience would change based on what that individual is experiencing themselves at that time.
Additionally, Ravine is fourth-wall aware, and knows that she is a fictional character. While this won't be a concern in game as she knows better than to share the details of the reality that we're all barbies being smashed together by bored individuals on the internet, I just want to say that that is a thing!
Basically what I want to know from players in the form below:
Do you mind if Ravine drops in on your character's personal space/dwelling unawares? Yes, no, why, ticky box? Ravine has a rather questionable sense of personal bubbles, so she tends to get all up in their business whether they're aware of it or not. This means that they might wake up to some lady on their ceiling or her head poking through a wall. Seeing that she can't "erase" herself from the living world like she can in her canon, being a watcher is going to be a little more difficult for her, but she still would be able to hang out on your wall/ceiling like a creep.
Would Ravine be able to hear/see your character's thoughts? Yes or no. We can always discuss details later if yes. If no, it could be because either your character is psychic as well or has a psychic block. We can also talk about how this might affect a non-physical/living character (for example, I doubt that she would be able to hear the thoughts of a machine, so I'd say that robots would be exempt).
Can Ravine tell whether or not your character is dead or alive? As one can expect, she would have a sense for whether or not someone has a soul, and the state that soul is in. This would mostly affect characters that are dead in their canons, ghosts/apparitions of some kind, and any non-humans that exhibit certain special abilities. Feel free to ask if you have questions about this!
Would Ravine be able to see your character's past/future/alternate realities? Whether it's for Hadriel or their canon, it can still apply. Keep in mind that Ravine has a strong belief in not asserting herself in the lives of the living, so chances are she won't go all Fortune Teller on you unless it's for some reason absolutely necessary. If your character comes from a canon where there are multiple routes/endings, she would be able to read those as well. Let me know what you think about the last one, as that's a biggie and differs from character to character!
If your character dies, would you be open to having them interact with Ravine? As a Psychopomp, she is able to speak with dead souls. However, this is limited to her being only able to speak with them, as she would never execute a soul that is supposed to be resurrected
Do you wish to opt out entirely? You don't have to give a specific answer why! I am going to be screening this post so people can feel more comfortable with their answers, if it helps. :)
I would also like to reiterate that Ravine will NOT be fourth walling your character! Not unless your character has similar fourth walling capabilities, because she might want to commiserate in that.
But in any case, just if there are any concerns of that ever happening, rest easy.