My Female veiled has become very hesitant to me picking her up or even my hand being in the cage. When she was a few months old when i didnt know as much about cham care, i could walk over to the cage at a normal pace slide open the cage and rush my hand in and she would instantly climb onto my hand. I am in the process of building her a new enclosure and she is stuck in a glass tank. For two days in a row now she has reared up at me opened her mouth and hissed every time i get near her. It scares me mainly because she has never acted like this and i dont want her to turn into the chameleon you can only look at not touch. any input would help.