I've got a secret. Can you keep it? (Reader X Levi)

"But our time comes to an end and we will always remember what we had.
I love you, mom. "

Ashley is your average girl from Shiganshina. Well, was average. She used to have a happy and wonderful life consisting of a happy adoptive mother, Rose, and a kind loving adoptive father, Matt. But that all ended when the Colossal Titan broke threw Shiganshina and her mom was killed instantly by a huge gust of wind hitting a nearby house whilst delivering supplies and her father was eaten by a Titan trying to save her. But that was all in the past. This young girl had set her mind to killing all the Titans out there and freeing humanity from inside these walls. Making a few friends in the trainee camp, she holds a secret that she vows her life on never telling anyone about. That is, until she finds out her Corporals background story and may just have the will to tell him. But, with his cold expression and commitment to the Scouting Legion and Erwin, can she really trust him?