Yes, two. Why?
...because it seems that you took the mother's contention at face value.
I just wanted to know if you had experience as a parent. Having children yourself, you must know that children at that age are remarkably self absorbed. From my experience, it seems somewhat of a stretch that children of their ages could, independently, assess and react to this situation, as they did.
My point is that if these children reacted as their mother claims, then they are mighty special. I don't believe her.
If it is true, than they have been brainwashed from a very early age. How they turn out as adults will be interesting to observe.