Nadia was missing.
Belladonna had discovered that when she had decided to run some things with Nadia, so she would be able to focus on her mission during the day instead. Now, that she knew Lady Kestra was hot on her trail, she couldn't let any second go to waste.
Belladonna wanted to believe that after they had gone to the Cave, the Nahiri also went to the cave too, and that was what had led Lady Kestra there. But that was a wild guess and a stupid one to foolishly believe in.
Lady Kestra was with the piece of cloth that had her blood on it, she had definitely used that to track her down.
By Ignas, the situation was messed up and it got messier when she realized that Nadia was missing.
Of all the insane things to happen today, that just had to be one of them.
She just disappeared.
Belladonna had suspected Lady Kestra for her disappearance, and she had convinced Eli to have her Work Room checked. She just had a great feeling that she had something to do with it.