Whatever happens, make sure that YOU know that YOU as a parent are responsible for the well being of your child.
Not today or tomorrow, but do tell your wife that your child is not allowed to participate in demo's, will not be an unbaptised publisher, and cannot be baptized before she is legally an adult. Nobody except you and your wife is allowed to do anycult instructionBible study with your child. Not even close family.
This! It worked for me (husband very into JW, 2 children, first one already escaped and lives a happy worldly life! The youngest will be 18 next month and is not even 'unbaptized publisher' and I don't allow elders or whoever to push or say something to her about that. It works!)