Then i think we should understand about the kids first. If our silence could get accepted then silence is the best answer. But if silence not the best answer for kids, then white lies could be the best next answer, avoid kids from wrong answer from wrong person and avoid them from bad condition. But white lies could decrease kids trust for you, until they understand why we did that and forgive us. If they don't, then it's our risk.
Losing our kids/make them in bad condition because our silence or losing our trust from them because our white lies.
I think if it's our own kids then when the situation comes, we know what the best for them.
Every action, even no action has it's own risk.