Your daughter

Seeing your face, the girl shouted in joy: "Daddy!"

You were stunned for a moment. At that time, a woman came down the stairs and said: "Don't dumbfound there. Come in and we'll have a talk."

You came in and the girl closed the door. You asked the woman: "Mother, is she...?"

Trisha answered: "Yes, she is our daughter, Evelyn Elric. Or you prefer another name?"

"No, I think you always pick the best name for your child. But how can she grow so fast?"

"That's a long story..."

From Trisha's words, after you left, she found that when she uses alchemy to create Philosopher's Stone while being pregnant, the soul of a Xerxesian transferred from her own Philosopher's Stone to Evelyn. It could be said that Evelyn is the reincarnation of that person. She had consciousness from birth but didn't remember her past life. Trisha taught Evelyn alchemy during the trip.

When they investigated a village, they encountered a Homunculus named Sloth. Evelyn had to use alchemy to create a multi-layer cell to imprison him. That made her grow into an 18-years-old girl.

"Then why do you stop your investigation and come here?"

"Because I just have a brilliant idea."