The Duke and The Earl's 2nd Daughter

"Come out, stop hiding yourself." 

John looked around the room, it was quiet, so quiet that the only sound he could hear was the sound of the breeze as it entered through the open balcony. 

But there was nothing, not a single change in the air, nor did John notice anything different. 

"I know you're here." He said as he closed his eyes 

[Deprehendre] 

Nothing, the only presence he could feel in the room was his and Ariel's. As he faced her direction, he could see the colour of her magic power which remained white. 

John found it strange how even with the normal version of deprehendre, he couldn't feel what sort of aptitude she had. The reason for this was because whenever he would use deprehendre, he would be able to sense a persons aptitude for an element, whether it'd be fire or water. 

But now, her magic power didn't show any aptitude but simply the colour white, did this mean that her aptitude grew? Or did it mean that she lost it?