About that California case with 13 kids locked up.

They have relatively recent photos online (2015 ish) with the whole family at marriage vow renewals and family vacations — yet they were locked up for years, some reports say a decade. So they abused and neglected and tortured the kids but brought the kids out of hiding for happy vacations or occasions?? also NONE of them made a run for it or tipped off a stranger? it’s perplexing.