i worked really hard as a parent to convince my wife+MIL that it is safe to let our boys roam the neighborhood now that they're old enough to cross intersection

i worked really hard as a parent to convince my wife+MIL that it is safe to let our boys roam the neighborhood now that they're old enough to cross intersections safely. However, a 10 year old girl one street over went missing. That has undone 5 years of getting my wife+MIL comfortable. My wife grew up in the neighborhood Amber Hagerman was kidnapped/murdered in so i understand but my kids are completely trapped.