Emma to Hakushaku 1-2

Emilia, the only daughter of a wealthy commoner, falls in love with the charismatic aristocrat, Dominique. The homely Emilia, understanding the purpose of propriety, rejects his advances. A stroke of misfortune then forces her to withdraw from society and change her name to Emma. No longer a woman of means, Emma becomes a governess for the Earl of Chard's progeny.