Your mother had a serious prenatal condition, and the baby was born prematurely. During the delivery, she suffered massive bleeding and nearly died in the delivery room. Her life was saved, but she lay in a coma on the hospital bed for a whole month before she awoke.
Before your mother had recovered from childbirth, she left the hospital with the baby and returned to Imperial Capital. Her health deteriorated from then on due to the complications she developed during that time.
She was the only daughter of the Mu Family. By the time she rushed back to the Mu Family, all she saw were the memorial tablets of your maternal grandparents...
During that period, your mother was deeply traumatized. She was heartbroken and consumed by guilt… and she checked into the hospital again.
The ordeal didn't end there for her.