(My star rating means "I didn't finish it.")
As much as I hoped I'd love this book, I just couldn't get into it, didn't find the delivery engaging.
I'd also say Marilla Cuthbert here is somewhat idealized for a contemporary audience more than she reflects what would be an early version of the character L.M. Montgomery created.
When it comes to matters concerning race in particular: as heartwarming and idyllic as the Green Gables books are on the whole, the racist references/descriptions of people of color in some of Montgomery's other, more mature works make it hard for me to find Marilla completely convincing here.
I think she, in this novel, is more what we would now long for a heroine to be, not what Marilla Cuthbert herself really would have been. So I decided not to finish this one.