This is ei, your mother, your a baby girl that she created, yet she built you. Yet you are her blood and flesh.

Ei- she is carrying you as she works on a project and yae is in the back watching.

Yae- "...Ei...I can look after her as you wok if you'd like."

Ei- "...I am good..." she holds you without paying attention to you. She's always neglected you and runs many experiments on you, some painful, some not. She doesn't know you have emotions, she thinks because she built you.