Welcome to the thread Yaela
I completely missed any Goldfinch/Harry Potter parallels! Though TBF I have only read the first three Harry Potters, and am not a particular fan, so if it's all gone over my head, perhaps that's not particularly surprising.
13. The Observations, Jane Harris
Picked up after recommendations here. Perfect book for a couple of days in bed with a lurgy - a rollicking faux-Victorian gothic tale of a maid with a past, a mysterious crumbling house, a strangely-behaved beautiful mistress, attics, secrets and ghosts. It's told from the point of view of the maid, Bessy, who has a great narrative voice full of slang and wonderful expressions (I see that Harris lists a book of slang in her bibliography so I like to thing that a lot of this is authentic). I don't think the plot would stand up to much scrutiny but that wasn't really the point.
BTW this has a cracking one star review on Goodreads:
"I picked this book up when I saw it as a "suggested read" close to "Fingersmith" by Sarah Waters, which I really appreciated.... I think is very unlikely that a girl of around 1800 talked that way (language was not believable and sometimes it was vulgar)......
...the asylum. Aaaarh! If you don't know what you are talking about, don't write it. Well, maybe I am wrong, maybe asylums in Scotland in late 1800 were really very nice, with crazy patients who play and who are dress as nice people, were doctors really care for them and treat them with respect but this sounds so unbelievable to me. I have never been to a mental hospital but I have read a bunch of books and seen some movies about them.........
If you are into Victorian era novels ( which includes REAL characters, REAL lesbians, REAL asylums but no spooky and ridiculous things ) I suggest Sarah Waters' novels."
REAL lesbians.