I agree that it is important to discuss some legal options with your L. What I am wondering here is if this is the first time your W has taken the kids? If yes, then I would wait a bit longer to allow everyone to cool off. Then you can try to reach out to W in a few days. If she shows any difficult or uncooperative behaviors, then fight for 50-50 custody.
You need to be prepared for some serious blow back from W on this.
Are you?
This doesn't mean that you have to be a jerk about it. Strong, firm and steady.
