Yes, the operator accompanying Ling Qingyu, who remained silent in front of Xiu Yanran, was Sofia.
Wearing a hologram mask, it was extremely easy for her to disguise herself as a national of Country C, but her cover would be completely blown the moment she spoke, even if she knew the language.
She couldn't mimic the accent or achieve fluency. Languages with higher difficulty levels had tonal nuances that were hard for foreigners to distinguish unless they had spoken them daily for many years.
Although it wouldn't matter much if Xiu Yanran became suspicious, avoiding unnecessary risks was always the best approach.
If one forgot about Sofia, she was the only Interpol agent personally rescued by Ling Qingyu, who had princess-carried her throughout the battle.
So, their relationship was beyond ordinary. Sofia had immediately recognized the true identity of her rescuer through body contact and voice.