She does not like being a blind, deaf, limbless sack of eldritch embryos and raging unbearable horniness! She really, really, really doesn't!
At first she spends her breaks relentlessly trying variations on her core strategy, in every moment where she's confident enough in being unobserved.
Then she starts letting herself slip. This one time, she's too tired, too miserable, too ragingly unbearably horny. She just cries continuously until they eat the tears right out of her mind and then dissociates until they take her back down to the lake.
There's something very compelling about doing nothing but get fucked and cry. It simplifies her life considerably. If she isn't trying to escape then she doesn't have a reason to think, and thinking is hard.
On her next break, she vaguely intends to try again, but instead she lets herself go completely. She doesn't even dissociate this time. She feels everything, and all those feelings get burned out of her mind one after another in an extended cycle of rape and brainsucking, and it all grows back, and the whole time she's—not happy, she's never actually happy enough that they eat that one next, she's miserable and furious and ashamed and grieving and terrified and endlessly, intensely aroused—but there's a kind of underlying satisfaction to it. Especially in the moments when they've eaten all her fear and pain and shame and sorrow and her whole mind is nothing but pleasure.
Maybe there's no point in trying to escape. Maybe she should just wait, let them do what they want with her, enjoy her torment as best she can. She still believes what she said to the smart one when she first got here: eventually, something different will happen. They can keep her here for a very long time but they can't keep her forever.
In the meantime, though...
There's a cycle where she starts finding that same strange satisfaction in her time by the lake, and then as soon as they take her down from her fleshspire to carry her back to the alcoves she bursts into tears and the horrorspawns' first meal of the day is an intense all-consuming wave of self-loathing—what is she turning into, how can she enjoy this—isn't enjoying it strictly better than the alternative?—but she doesn't want to be that kind of girl—but has anything in the whole entire world ever turned out the way she wanted it to?—
They feast on her self-hatred, and then on the euphoric bliss she feels when self-hatred is no longer a thing she's capable of, and once she regains that ability it immediately swamps everything else she's feeling all over again, and by the end of that particular break she has reached a whole new level of emotional disorientation.
She hangs from her fleshspire and suffers ecstatically, and lies in her alcove and weeps helplessly, and they fuck her and drink all the feelings out of her brain, and she finds it harder and harder to remember that there was ever a time when she had any agency over her own life. Harder and harder to care that she doesn't want this to be happening to her, that she doesn't want to be the sort of person who enjoys it.
She becomes almost a creature of pure experience, feeling everything, reflecting nothing. When she's birthing eldritch tadpoles by the lake, she is intense arousal and the constant yearning for just a little more pleasure, just enough to finally achieve the orgasm that's hovering just out of reach. When she's lying glued to the alcove floor, she is misery and terror and shame and exhaustion and the desperate need to be fucked. And when the horrorspawn are feeding from her, she is a kaleidoscope of feelings, shifting dizzyingly from one configuration to another as they rip each emotion from her mind and each one slowly returns to her.
After long enough, she unselfconsciously loves the sensation of alien cocks thrusting deep into her helpless body. After long enough, she barely remembers why she spends so much time crying, barely contextualizes her sobbing misery as negative at all; the tears are almost as good a release as the gloriously intense orgasms that she gets to feel every so often when the timing works out. After long enough, she stops even trying to have coherent thoughts; the only time she ever thinks straight anymore is in her dreams.
And then...
Well.
Then something different happens.