He can't remember her.
Maybe he just like little gril more than women.
He was sealed, lost memroy. maybe his daughter want to save him,want gei her father back .
I handn't read the novels yet , just a Imagination.
Forexample: if he rememberd her, he's seal maybe broken,then he willbe a dangers. So if she want to guard her father, she must make her father keeping forgot her.
One thousand way to let father forgot her. or
One thousand way to guard my father. or
One thousand gifts for my father.
She loved her father,but he forgot her. and they cant't be together.
At last. I hope in the novels. they had a happy enging.
My english is not very well.. maybe you can't understand.