Lady Dramatic by Kate Archer

Two guarded hearts. One undeniable pull. Can love break through their carefully built walls?
She is bursting with feelings and prone to laughing or crying. He is regularly gripped with strong sentiments he keeps behind a mask of reserve. Very naturally, they both go to great lengths to hide these deficiencies from one another.

Serenity Nicolet, fourth daughter of the Duke of Pelham, girds herself to face her season. She sat last year out as her twin, Patience, went forward. She’d hoped an extra year would bring progress in regulating her wildly swinging emotions—a sunset, a sunrise, even a dead bee in the garden, can all set her off. It is unlikely that any gentleman will wish for a weeping bride.
Sadly, she did not get far with her efforts.