The Vicar's Daughter by Josi S. Kilpack

Cassie, the youngest of six daughters in the Wilton family, is bold, bright, and ready to enter society. There's only one problem: her older sister Lenora, whose extreme shyness prevents her from attending many social events. Lenora is now entering her third season, and since their father has decreed that only one Wilton girl can be out at a time, Cassie has no choice except to wait her turn.

Evan Glenside, a soft-spoken, East London clerk, has just been named his great-uncle's heir and, though he is eager to learn all that will be required of him, he struggles to feel accepted in a new town and in his new position.

A chance meeting between Evan and Lenora promises to change everything, but when Lenora proves too shy to pursue the relationship, Cassie begins to write Mr. Glenside letters in the name of her sister. Her good intentions lead to disaster when Cassie realizes she is falling in love with Evan. But then Evan begins to court Lenora, thinking she is the author of the letters.

As secrets are revealed, the hearts of Cassie, Evan, and Lenora are tested. Will the final letter sent by the vicar's daughter be able to reunite the sisters as well as unite Evan with his true love?

 Opening line:
"Cassie fidgeted with the skirt of her day dress and said a silent prayer: Please help me remain calm."

Cassie is the youngest daughter (out of six) of the vicar and he and his wife have decided that only one daughter will be out in society at a time. This is frustrating for Cassie because her sister, Lenora, is shy and anxious. To "help" Lenora, Cassie starts writing letters to Evan, a man Lenora met at a ball, in Lenora's name. Cassie could not have seen the problematic outcome of her innocent actions. This "help" proves to have a ripple effect that is negative to those involved and those not. This is really where the story sucked me in and held me tight.
Cassie fell in love with Evan. Evan fell in love with the woman in the letters but was determined to get to know Lenora better. Lenora was happy Evan paid attention to her. Then Evan proposed to Lenora and everything went downhill.
I wanted to keep reading to find out how in the world the characters got out of this mess! It really seemed hopeless. Josi Kilpack is an excellent writer who keeps her readers guessing and reading.
I really, really loved the character arcs. Cassie's was especially fascinating to read. She grew and matured so much in the story it was delightful to read.

Thanks to netgalley for the early read. I loved it!