Eileen the crow is one of the first NPCs you will meet in Bloodborne. She introduces herself as a Hunter of Hunters, and welcomes you to Yharnam (she also gives you the coolest gesture in the game, the Shake Off Cape gesture). You can find her in the rafters of the sewers after breaking through a few boxes. Her voicelines go as follows:
"Oh, a hunter, are ya? And an outsider? What a mess you've been caught up in, and tonight, of all nights... Here, to welcome the new hunter." (She then gives 4 'Bold Hunter's Mark')

"Prepare yourself for the worst. There are no humans left. They're all flesh-hungry beasts now."

"Still lingering about? What's wrong? A hunter, unnerved by a few beasts? Heh heh, no matter. Without fear in our hearts, we're little different from the beasts themselves." (She then gives the 'Shake off cape' gesture)

"What are you still doing here? Enough trembling in your boots. A hunter must hunt."

Even if you don't talk with her in the sewers, you still have a chance to start her quest by going back to the sewers BEFORE fighting Vicar Amelia. After you do that, you can find her in the Cathedral Ward, she will tell you about one of the hunters she's hunting, Henryk, and warns you not to engage. Here are her lines of dialogue:

"Oh, hello there. Perfect timing. I must warn you... Not to go near the tomb below Oedon Chapel in the Cathedral Ward. Henryk, an old hunter, has gone mad. And he's my mark..." (She then gives the 'Shh!' gesture)

"Don't go near the tomb below Oedon Chapel in the Cathedral Ward. I have business there first..." (giggles)

This is what she says after you help her kill Henryk, because you obviously don't listen to your elders:
(Breathing heavily) "That wasn't necessary of ya, but you have my thanks. We made it, with our lives... You're not bad at all."

"You must've killed Gascoinge as well then? He was falling apart, I'm sure it had to be done. But try to keep your hands clean. A hunter should hunt beasts, leave the hunting of hunters to me." (laughs) (she then runs away)

If you've successfully done all these steps, then after you defeat Rom, you will find her on the steps of the Grand Cathedral, bleeding. She tells you:
"Oh, is it you again?"

"I'm afraid I've made a bit of a blunder. Oh, don't worry, I've taken enough blood, enough to save an old woman."

"No more dreams for me, this is my last chance."

"What a fool I am, I'll have to tread carefully. But that thing still lies in wait. Turn back. This is my score to settle." (She then gives the 'Wait' gesture)

"My prey lies in wait this way. Turn back. This is my score to settle."

If you defeat the hardest not-boss in the game, she has this to say:
"Don't you ever listen to your elders? No matter, you did save my life."

"I don't seem to be apt for this life anymore. My glory days were long ago now... Hmmm, I know... Here, for you." (She gives the Crow Hunter badge and Hunter rune)

"This too is hunter's work, but it bears no honor. A burden you may choose to carry. The desicion is yours alone."

"Ahh, my eyes grow heavy... Let me rest a while... I'll be fine, just wait."

If you reload the area, she will then despawn. It is unknown if she dies, or actually survives. I'm willing to bet that she survives, but that's probably my bias talking.

If you, however, don't complete her quest, or fail to initiate her quest, she will become hostile when you get to the Grand Cathedral. Her voicelines go like this:
(Laughs) "Few hunters can resist the intoxication of the hunt. Look at you, just the same as all the rest..."

"The hunters must die... The nightmare must end... Only I can stop this madness!" (more laughter)

"The beasts cannot be stopped! What good are hunters now?!"

(Other things she says during the battle) "Your blood is mine! A hunter's blood for me! Your punishment is death! Death to hunters!"

"Enough of this terrible dream!"

(After she is killed) "Ah... You monsters... All hunters must die!"

In this version of events, Eileen goes mad, presumably after killing the Bloody Crow of Cainhurst, and attacks the player character. A pretty sad thing to think about, but luckily, I can just go by her quest line, and pretend she never died at all.

This is a gallery for all the pictures I really love of Eileen! All these come from offical/cannon sources!

This is a place for me to write letters to Eileen about how much I love her. Beware, this might get really sappy or lovey-dovey.

Demi-girl, mainly she/her but sometimes they/them.
Demi-sexual, bisexual with a preference for feminine-aligned folks.
She's autistic, she has a special interest in writing. She hopes that she can be an author one day.
Other special interests she has: gardening, cooking.
After the events of the game, she survives, escapes Yharnam, and now lives in the countryside mostly alone (except for me, of course). She owns a few chickens, who she loves very dearly (she also spoils them. A lot). Here are their names: Bessie (black chicken), Carrie (white chicken), Minnie (brown chicken). She's not much of a baker, and enjoys cooking way more. However, I am more of a baker, so we help each other in that regard!
Eileen still wears her mask outside of Yharnam, because she has a sensitivity to smell. She still stuffs herbs and flowers into the mask, and she will until the end of time.
As mentioned before, she hopes to one day become an author. She currently writes small snippets of fantasy and fictional stories, but she's working on a HUGE story that she eventually hopes to actually publish. (I don't think I'll actually write what it's about any time soon, just because I fear I may become as obsessed with it as I am with her...)
(A bit more sad/angsty content warning)
Because of her past as a hunter of hunters, she has a hard time connecting with other people. She is constantly paranoid that they may turn into a beast, and that she'll be the one who has to kill them. Since she is outside of Yharnam now, there isn't a chance that'll happen again (unless someone repeats the exact same events outside of Yharnam), but, you know, trauma is weird and usually not 'reasonable'. She has to be reminded sometimes that it won't happen again.