The couple say "cultural differences" led to the situation, and that the authorities had takenexception to them sleeping with the children and feeding them by hand.
Though the Pease amendment was couched as a limitation on itemized deductions, it had very little to do with itemized deductions since it was based on income earned, not deductions taken (with one exception discussed below).
The public safety exception does not set a hard time when questioning must stop and the suspect must be taken into court, but it's generally understood to be about 48 hours.