AMerci

Tanya Edom's position as the Crown Princess is revoked by her fiance, Crown Prince Malek, and she is replaced by his lover, Lady Celeste. 
Tanya was head over heels in love with the Prince and wanted to become an Empress worthy of him more than anything. She did everything she could to impress him but her efforts failed to draw his attention in the end

Devasted, Tanya doesn't know what to do, all her life she'd been working toward becoming the future Empress of the Empire, and now her dream had been taken away. 
However, after overhearing palace servants gossiping about her demotion, she realizes that her obsession with the prince and being Empress are dreams she should put to rest and try to do something else with her life.

Doing so leads her to get warped up in a conspiracy concerning the crown. She ends up helping the Imperial Army solve a mystery concerning mysterious letters being sent across the empire.

Rejected Crown Princess To Imperial Cryptographer

"So if you can I would love you go through some of the books and translate them for me

Tanya's face immediately brightened up. She was happy at the fact that she was finally tasked with something and on top of that something she would really enjoy doing.

"Yes!" she responded enthusiastically.

Taron's eyes widened then he chuckled, "you almost seem excited to be working," he said taken aback by Tanya's beaming eyes.

Tanya blushed a little bit embarrassed, but it was true she loved languages, and she loved reading.

"But you know many foreign languages as well," Tanay asked wondering why he was making it seem like he knew none at all. I don't know all languages spoken across the continent like you but even for the ones I do know I'm not completely fluent in them. It would still be best to have a professional look at them he explained.

"I see, but you praise me too much I'm not as you say," Tanya said.

A suspicious party invitation