Suggest me weird girl books (especially literary fiction or horror)

Try otessa moshfegh’s other works, and i’d recommend grey dog by elliot gish (teacher in colonial new england slowly loses it)
stag dance by torrey peters (weird short stories about gender and queerness)
the unworthy by agustina bazterrica (post apocalyptic torture nuns)
the night guest by hilda knutsdottir (woman tries to solve a medical mystery- she’s walking miles in the night with no memory)
blood on her tongue by johanna van veen (gothic, vampire, female friendship, misty moors)
freakslaw by jane fett (freak show comes to small town)
the lamb by lucy rose (weird mom and daughter in the woods)
o sinners! By nicole cuffy (cult story)
manhunt by gretchen felker martin (trans girls hunt cis men in post apocalyptic world to synthesize estrogen from their nuts)
the bog wife by kay chronister (weird bog dwelling family trauma story)
smothermoss by alissa alering (sisterhood, appalachia, serial killer, strangeness)
god of the woods by liz moore (goth girl missing from new england summer camp)
paul takes the form of a mortal girl by andrea lawlor (shapeshifter explores gender)
the writing retreat by julia bart (something’s off about the writing retreat- competitiveness, sexual tension, and more!)

Source: am a certified weird girl who enjoyed many of the books you mentioned

Hurricane Girl by Marcy Dermansky

big swiss, piglet, sugar, the eyes are the best part

loved alls well and bunny

A throw back, but We Have Always Lived in the Castle is honestly peak prototype weird girl fiction. This also goes for The Hainting of Hill House, but WHALitC really scratches that itch