That touches something else that's raw and tender. Something she's kept hidden a good long time and wanted to keep hidden forever. But if Will sees right through her (her Will), then Declan opens her up. Maybe it's literal. Him fucking her wide exposes her.

She curls her fingers against his chest. "Don't. Don't dream about me like that. I'm not that girl," Kate protests. It's soft and weak and obvious as fuck to her ears that she wishes she were. For him, she wishes she were.