"What! How... how did you? Don't tell me you had hired someone to watch over me!" She asked him getting utterly shocked. It's the only thing she could guess at that time. Otherwise how can he comes to know about it. She didn't even planned to tell Lucas about Daniel and she could guess that the one on the other side of the phone is must be the one who was following her very secretly without her knowledge.
"That's right! Now tell me Rose and don't try to lie me, do you understand?" He asked sternly and she just gulped her saliva nervously. What if he will missunderstood her that she is meeting with Daniel in his absence.