Don't judge me (also audiobook because I have lost the ability to read fiction rip) but harrow the ninth. Purple prose Catholic school lesbian angst. A bit complex, a second person book is quite challenging and Muir floundered a little pulling it off. She stuck the ending though, solid.
Started Nona the ninth and enjoying it a lot more because Harrow is a joyless ghoul but Nona is extremely sweet and cute.
I'm curious where Tamson Muir is taking the whole thing. It's all very gnostic with John as the demiurge, crossing the river/true lictorhood both stand ins for gnosis. Anyway, good stuff. If you want less angst but also complex plots and purple prose Catholic mysticism gene Wolfe's book of the new sun is a good read too.