Reiguu Houchi Sarete 30-nen, Mouou Genkai na node Rien Itashimasu!

Synopsis

After 30 years, I will be loved by my husband Elaine Sherwood, a viscount's daughter born and raised in a human kingdom, was suddenly proposed to by a demon duke. A marriage between a human and a demon was unprecedented. Though hesitant, Elaine decided to marry into the demon kingdom for the prosperity of the Sherwood family. However, her husband, Aldric, suddenly disappeared after their wedding night, leaving Elaine alone in a foreign land. And so, 30 years passed, with her husband neglecting her—I've reached my limit! https://www.cmoa.jp/title/353393/