It’s fun to undress in front of her Knight when he has not ejaculated for many days - she can feel his desire for her.
And she feels very special because she knows that what happens when she gets into bed with him is up to her to decided.
Perhaps tonight she will have him eat her to orgasm. Then they will gently cuddle with her holding his erection. And that is all that happens.
Or perhaps she wants him inside her - and she might even have him ejaculate this way.
Not knowing what will happen keeps things exciting for him. Her undressing in front of him is enough to get him hard and to feel hers.