Horror-ish YA book about a girl who starts working at a manor with supernatural creatures including a man with backwards feet

I read the book in 2022! I don't remember much, but I think it takes place in like 1850s England?? at the beginning the girl earns some money and attempts to buy a pie with it, but the shopkeeper thinks she stole it and she essentially has to run. There's a man with feet turned backwards who owns the manor she begins working at I think. It's the first book of a series and I think one of the other books in the series has the word 'crypt' in the title.

I remember this line: "roses so sweet it reminded me of rot." It's written in first person pov.

This is driving me crazy so I appreciate any help at all!!