The Duke’s Wife in the Penal Territory’s Magic Reform ~ My Attribute May Be Defective but I’ll Make It Useful?

“Light magic is useless - it can only glow, not attack or heal! You’re a disgrace to the Marquis family!” Abandoned by her parents, she was married off to an impoverished and dangerous ducal territory overrun by monsters, known as the ‘penal territory’. Near death, she regained memories of her previous life and began reforming ‘light magic’. “By the way, this was supposed to be a white marriage that would end in divorce after 3 years, but I still haven’t even seen my husband’s face. Oh well. I’ll just join the guild and become an active fan.”