Women spend hours adding to their beauty, especially on occasion when they want to impress. Acknowledging her efforts and telling her that "She smells good" will really make her feel happy. You could do this when you are nibbling her ears, passionately kissing her neck or licking her naval.
The sexiest thing that can come out of your mouth is Damn, "You're so tight". It makes them feel that they have maintained themselves and turns them wild.
In today's world everyone talks about gender equality, but a very indispensable part of it is orgasm equality as well. As everyone know that women are slow to start and men are vice-versa. So women are generally shy when it comes to receiving or expressing love in bed. They don't overtly demand anything. But a women would surely love to listen if her partner asks her "What do you want".