Fake scientist
There was one more thing for me to do in the meantime. I took my Ring of Thousand Faces and buried it in the ground in my cage so Aivena won't spot it.
She returned in a couple of hours with a bag of new journals, writing utensils, glass tubes, substances and other stuff she placed on the shelves of her tree house. After that, we were back to the question game, but this time with writing down the answers.
She drilled me on the parts I was made from and the abilities I had. I lied to her about the poison resistance, saying that it was from a malformed monster in the caves, and hoped that she won't test the extents of it in the future.
After the end of her questions, Aivena still didn't know about my blind sight, stinger, web spinning, cold affinity, heat vision, enhanced senses, steel soul, telepathy (that was only good for listening in on telepathic conversations of bugmen, of which there were none) and, of course, Pest.