"But you just want to keep me happy so I won't ruin things between you and Erica, isn't that it?" she says in a hurt tone.
No, you say that you like her and genuinely want her to be happy.
"But you also don't want me to give a bad report to Erica, right?"
Yes, you have to admit that is right.
She absorbs this in silence for a minute. "Well," she finally says, "I should have known."
She puts on her lingerie and lays down in the bed.