She makes an assumption

Mikayla takes your hesitation for rejection and her smile falters slightly.

"Maybe you don't want a black ghetto chick," she says, sliding her hand away from your bulge. "I'll get one of those pretty white girls. They'd all love to show you sir. You don't have to settle for me." She keeps the smile on her face, but you can see the hurt in her eyes.

She reaches for the door handle to leave, biting her lip sadly.