I don't think saying this is a spoiler, but if you didn't know there was an HEA, I guess it would be: Even the hero says near that end of the book that it all wrapped up a little too easily. Like way too easy. As in 90% of the book built up all of these complications, obstacles, and then it resolved itself in one unconvincing evening. It was like a farcical play in which the villain breaks down out after a mild mannered rebuke, confesses and repents his ways much to everyone's confusion.
The hero and heroine were young. Like not just in years, but in behavior. I couldn't believe that either were in love. They spent so little time together that it was baffling.
It drove me crazy that her rape was referred to as "ravishment" throughout.
Lastly, she is pregnant as a result of the rape. It found it super unrealistic that a total stranger decides he's in love with her after meeting a couple of times and wants to raise her unborn child as his own, making that child, if a male, his heir. It is just super hard to believe in aristocratic circles and, well, with men, let alone men of that era who were so preoccupied with the family line. It's like they blew entirely over the fact this baby would his firstborn heir, a duke's grandson, who would be in line for the dukedom if something happened to his older brother's family.
I gave the first book in this series two stars also. I keep reading them though - the writing itself is quite lovely. My beef is with the details of the plot. I think I just wanted some other more creative resolution for the set-up.