Because you are still in the process of obtaining a divorce, the preliminary injunction is in effect, which means that neither of you can travel out of the state with the child(ren) without written permission from the other parent. If you have significant concerns, I would suggest not agreeing to allow the travel. It seems that would be a defensible position to take in court in the event she seeks the court's permission to allow the travel, while your divorce is pending. Later on or once the divorce is finalized, you may have to make some concessions, but certain protections can be put into place such as requesting that you manage the child(ren)'s passport. I would consult an attorney about this issue.