Why does Kit find William's visit awkward?

William's visit reflects his desire to court Kit. She simply doesn't know how to react.... she's inexperienced.

WHAT ON EARTH could she think of to say next? Kit wondered in desperation. She sat looking down at her folded hands, reluctant to lift her eyes to the young man who sat oil the bench across the wide hearth. She knew that when she looked up she would find William Ashby's gaze fixed steadily upon her. For the last half hour they had sat so. When a young man came to call what did one talk about? Was it all up to the girl? She had tried her best, but William seemed content just to sit, his back stiffly straight, his large capable hands resting squarely on his sturdy wool- clad knees. He looked impressive, in his cinnamon broadcloth coat and the fine linen shirt. His glossy beaver hat and white gloves were laid carefully on a chair near the door. William seemed to feel that merely by coming he had done his share. Apparently it was up to her to provide the conversation.