On the trip I'd not initiate contact. But make as phonecall each night to talk to the kids. You'll naturally have contact with her during those phonecalls. Polite. Listen. Validate.
If she initiates contact, fine. Be polite.
Remember, the progress is likely due to your DBing. Now is not the time to stop DBing.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018