Lokuge is likely a very good writer. I expect if the writing had intruded on my reading I would have noticed. But she is not a cheery writer; she is a dour, depressing, bleak writer. Here is what I learned from Turtle Nest: your family sucks, everyone sucks, no-one will be kind to you, nothing good ...
Supposedly a book about a woman in touch with the beauty of the world but it's actually about a failed marriage, an unhappy family, loss and madness. Perhaps there was something in it I missed. Beautiful imagery, though. I wish there was a reason to like the characters, to feel sad for their problem...