Forget the borg. This is a conversation to have with ex. If not resolved, it should be a conversation with an Atty and you should definitely bring up all the applicable dirt in the borg, your/her family and ex congregation. I think that your ex wife knowing that will happen might help her decide how to respond.
The child protection issue in every way actually could impact this. WT is on record with their stance medically and regarding how they deal with abusers.