She had personally experienced his capabilities, so of course, she understood him best.
He could create unprecedented biochemistry products in biology, allowing you to die silently without anyone detecting anything.
He could also develop a miracle cure that would benefit humanity, extend the average human lifespan by at least several decades, and cause a huge sensation in the history of biomedicine.
It's just that he has not put his ideas into action yet.
She admired him, held him in high esteem, and was willing to do anything for him. No one had ever recognized her worth before.
While she tried hard to prove herself, even her closest family members made her feel superfluous. It was this young man who recognized her value and meaning of her existence.
So, she joined him without hesitation and became his capable assistant.
He even told her about his ultimate goal to change humanity, and she believed that she was his closest confidant.