RECEIVER: Within minutes calls the SENDER and says something similar to, "I'm sorry, but I have to come get you right now. Something important / an emergency just came up."
SENDER: What is it?
RECEIVER: I don't have time to explain. I'll tell you on the way home, but I'm coming to get you right now.
(they could even put up a bit of a protest to make it look more authentic)
1) It appears that the situation is out of their control, so there is no reason for their peers to ridicule or judge them.
2) You have not only encouraged, bu actually empowered them to make a responsible decision.