At the beginning it was witty and enjoyable. 
 Such a lady as this would never do anything as plebeian as to stand or walk; she progressed! 
 A language and an atmosphere was almost perfect. I liked Millicent/Mr. North. 
 Moreover, between the lines there were also a few messages about roles of women and men in that society, about costs of breaking the rules, about how easy to forget how it is to be on the other side. 
 It was enough, she told herself, to have Shoffer as a dear friend. It was enough. Her hands shook as she returned to her own cooling breakfast. It would never be enough. 
 Millicent flushed as she realized the truth of that accusation. Like many men of the Ton she had considered the women of her family unable to comprehend the complexities of finances. And she was a woman! 
 But, at some point I felt like an author didn't have an idea what to do with the plot. It was funny and I can't say I was bored but... 
 I don't know what to add. One part of me reminds me that I had a good time. The second part reminds me that a romance was a small disappointment and there were a few odd things (e.g. (view spoiler)[ Did Millicent really think that she could have had sex in the mask and wig? What with grandmother's appalling attitudes? No punishment? (hide spoiler)]) 
 I think that Kalinya Parker-Pryce has right: 
 If you like sexy romance - this isn't it. 
 If you like Georgette Heyer's romances, and who doesn't? - this isn't one. 
 If you want a light read just to kill time and romance isn't important, read it.