Oliver immediately grabbed Mia's shoulders seeing the sudden change in her body. He knows she understands what he's asking and maybe now she's starting to panic, "Hey, calm down. I wouldn't say that to anyone."
Mia's eyes glanced wide at him, still not completely believing.
"I won't tell anyone. I just want to make sure," said Oliver, stroking her shoulder gently trying to calm her.
Mia closed her eyes. She believes him, but she blames herself, her carelessness lets Faye's big secret come to light. She did not know that her telephone connection had not been cut, even though she was sure she had pressed the 'end' button. There was nothing she could do now, You want to know the truth that Fay was contractually married to Denis? You're asking the wrong person, Oliver."