How does she know so much about Olivia???

That's how intense her phobia is. Just like everyone has their own mental weaknesses, this is her own weakness. 

But only very, very few people know about this and she has always managed to avoid these places. If not, she used to have someone accompany her. 

This time, her thirst to humiliate Natalie was to that extent, she even dared to go to meet her man at the deserted corridor. 

She would have called him to meet her somewhere else, but it isn't safe as guards will be patrolling there for twenty four seven. 

This is the only place where no one dares to come. It's because this corridor has been shunned from entering. 

Meanwhile, Brina chuckled. "I didn't expect you to be this weak" she whispered in Olivia's ears and she quickly took Olivia's mobile before installing the virus. 

After making sure she has access to Olivia's phone, it was only she asked Eliina to open up the secret passage.