Poor Dad has advanced dementia now, but back in the day he would have probably spent a few moments trying to work out how to break it to Mum so she didn't fly off the handle, then called Interpol and explained the situation to them in a terribly rational manner before saying to Mum "This will be a bit of a shock, but it's all in hand and..."
At this very moment, Mum would shriek, grab the phone and call her entire family while packing an overnight bag, then call her best friend from her mobile while shouting "What do you mean? You'd think someone in the parish would have a sawn-off shotgun or two, just get them to leave it in the porch!" My aunts would by this point be variously a) in tears, b) asking her contacts in the tennis club if they 'might know someone helpful', c) insisting she would stay at home and pray for my soul, and d) somehow managing to commandeer a helicopter, an assortment of weapons, some random police officers and a news crew. All of Mum's family would descend into Paris, by which time they would be slagging off the third sister for being impractical and she's not been the same since they moved, there was nothing wrong with that house and...
Meanwhile, Dad would call Interpol again and mildly inform them that further to their earlier conversation, four enraged Irish women were about to arrive in Paris without passports and it was best that they knew about this first. He would then quietly mobilise his own family, get on the Eurostar and decide whether he ought to sort out my predicament first or contain the distinct probability of my Mum's family going mad with shotguns and quite possibly shooting each other in the process.
I have visions of Dad saying "excuse me, I am about to have a very irrational moment", grabbing an AK-47 from Mum and scudding the gang leader over the head with it. He's had three irrational moments in his life, I think. Mum would have run out of ammunition hours previously..