She asked because she knew that Her highness could endure any High level pain, not to mention these simple symptoms.
Also she wasn't sure about what she said since it's not the normal version of white berry poison but an advanced version.
She was nervous at the same time scared after hearing Mo Ling’s question. She hoped that Her Highness would be in less pain if ever the symptoms occur.
“Nothing. I am fine.”
“What is the situation on your end?” After she assured Snow that she was fine, she asked about the progress of the work she assigned to her.
“Reporting to Her Highness. I located five of our members so far and I'll take action tomorrow.”
“Good. If you have something which you can't handle then wait for Reaper. He’ll come and give you a hand. Don’t be impulsive.”
“Alright.”
“Rest early and be careful dealing with things.” After instructing Snow with some other matters she hung up the phone and sat on the bed contemplating her condition.