This was a good story (and I admit to having a weakness for time travel love stories), and if it hadn't been for a few things that I just can't overlook, I'd have given it another star.
For one thing, the way the author set it up to have 1980's Brianne marry 1850's Ryan was unnecessary, and sure to offend a lot of readers. It was a case of her being half unconscious from laudanum (medicinal purposes, nothing sinister), while he had drunk more than his share of liquor, which gives it a dubious consent vibe, by today's standards. The idea was for Ryan and Brianne to get married, so there had to be a way to bring this about, since at this point, they were virtual strangers, and she had to come to terms with having traveled back in time, while he had yet to believe her in credible story. So, they were caught in bed together, and for propriety's sake (and in case there should be a baby) it they had to get married.
Ms. O'Day-Flannery should have done her research better. Back then, it was only necessary to be in a "compromising position", which didn't have to mean sex. (In the novel "Gone with the Wind" Rhett Butler said he had to leave his hometown because people thought he was a cad for not marrying the girl he "compromised" and all he did was get her home a few hours late!) So, just a passionate kiss on the bed would have done the trick, maybe a bit of fondling, without the drugged/drunk sex.
Another goof (and here she made a mistake common to HR writers) was in having the ladies in the story use the word "pregnant". It took until the mid-20thc for that term to be fully accepted, and in the 1850's, a woman would be "expecting", "with child", "in a delicate condition", etc. For Brianne to say (even with her friend Rena) she was pregnant would be shocking bad manners, and she would have been taken to task. Instead, they say the same thing, which wouldn't have happened. "Pregnancy" was a term reserved for doctors, and even they tended to say "gestation".
Brianne's character was a bit too contradictory. In her own time, she was close to her widowed mother and sister, yet couldn't wait to be out on her own, and get her own place in Philadelphia. She decided to save herself for the right man, then decided to throw it away on a jerk named David that she wasn't seriously dating, and when she changed her mind, he wouldn't take no for an answer! (Needless to say, she avoided sex after that.) She claimed to like her independence and freedom, then envied her married, pregnant sister. Too many times in the book, she appears contrary.
As far as the story, just when I was congratulating Ms. CODF for not using the usual trope of a jealous misunderstanding, she disappointed me and had Brianne catch Ryan in the garden with his former mistress, Caroline (where the dumbo actually kissed her, to prove she no longer "turned him on", a simple "I reserve my kisses for my wife" would have sufficed), then go into jealous/revenge mode, flirting with other men, refusing to talk to him, having a hissy fit when he tried to explain, and then it goes over-the-top, where a frustrated Ryan almost rapes her (afte knowing what happened with David, that was real crummy) and she scratches his face, declares she'll never speak to him again, let alone sleep with him, etc.
What's even more dumb, is Ryan refusing to explain after she's calmed down, saying she's no ready to hear the truth yet. WTF???? She's hurt and angry, because she thinks he's taken up again with his former bed partner, that he wasn't satisfied with her lovemaking, that he doesn't care, etc. (at this point, they hadn't said ILY to each other) and he wants to wait to tell her??? DUH!!!!!
She almost did another trope, of having a pregnant Brianne decide to leave, without telling Ryan about the baby! Fortunately, she nipped it in the bud!
There were some weaknesses in the story, like Brianne determining to help the black servants (Ryan had indentured servants, rather than slaves), especially with educating them, but nothing much came of that. When she explained to Ryan about the upcoming Civil War, he was finally convinced that she was from a future time, but he took the whole fall of the south, the death and destruction the next decade would bring, way too calmly. He decided to prepare for it financially, see that the servants would all be provided for, was confident that, if he fought and died, Brianne - as a wealthy widow - would be okay. And that was it! Not very convincing.
One thing I did like was Brianne's friend Rena (one of those "hooker with a heart of gold" women) getting a chance at a new life with Ryan's friend, Stephan. When she tells him about her past, he doesn't go the usual route of either rejecting her or being immediately understanding. Instead, he leaves, stays away for a week to think things out, then returns and tells Rena they'll start a new life together. (His own past was very far from angelic.) A separate book about them might have been nice.
BTW: anyone who's ever seen the TV movie "The Two Worlds of Jennie Logan" will find the ending of this book familiar. I'm betting CODF watched it, too.
A good book to read, despite its flaws.