In late 18th century England there was not much justice when you were a poor woman and that brings the author to light very well. It is a sad situation. She also shows the class differences and the struggle people have to live through. Being a Scotsman makes you frowned upon, being rich but heaven forbids had merchant parents keeps you out of the top circles, being poor have you committed to a workhouse and when employers are cruel there is no one to turn to.
The knight in shining armour is a the son of the magistrate who sees his father's constables about to beat a girl to death and steps in to save her.
There was two things I had doubts over: in those days and age you would not contemplate marrying someone so far below your social station. Maybe the idea that he really loved her and she him and the possibility to marry could have come up at the end.
The other thing is that I had the feeling the book ended a bit too soon. I think the writer wants to continue from the viewpoint of the other protagonists but I always think it is better to write a tome including the whole story. Hence the 1 star deduction.
Do not think you buy a sweet romance book this is more Dickens doom and gloom. But it had me spellbound (lawyer so I was interested in the whole misconduct of justice).
PS the vows are silly! No one would mention orgasms in that day and ages let alone in church!!!!