Margaret Babcock is tall and a botanist, fairly reserved except for a few friends. On of these is Dr. Rhys Gray with whom Margaret maintains a correspondence. He arranges for her to come to London to display her prize roses to the Horticultural Society and to see the sights. They are very good friends with the potential for more, but Rhys is supposed to marry the daughter of a neighbor, Sylvia, due to some odd circumstances involving his father and brother. 
 I generally enjoy friends to lovers romance, but here I felt that the story never got much beyond the friends aspect. Margaret and Rhys are appealing people with their disdain for society and their interests in botany and medicine. But I had a problem with Rhys attitude toward Sylvia. I get that he's conscientious and concerned for his family, but he seemed pretty weak in the way he ignored the problem rather than deal with it long ago. And it seemed to me that he would have continued this except Margaret finally pushes the issue which was a disappointment. He traded being pushed around by his mother to Sylvia and then finally Margaret which made it hard to admire him. 
 The other problem with this book in my opinion is that it wasn't so much a Regency as maybe an American historical from the early 1900's in the way the characters acted and how it was set. If I had been more engaged in the romance I probably wouldn't care so much about this, but I kept getting pulled back out of the story because of things like a young Regency miss who is corresponding with a single man (shouldn't happen no matter how academic the correspondence). This was an okay book, but definitely not one of Ms. Noble's best.