You're spot on about the challenges being unpredictable - each case is so unique, which is why the adaptability of foster parents is paramount. Those security measures do sound like overkill to most, but hey, if it worked for them, why not? It's a creative approach to catering to the child's needs and providing some reassurance in an otherwise uncertain world. Some might view it as a bit extreme, but again, each family's circumstances are different, and the girl's welfare is ultimately what matters.