If the local Christian leaders said to start killing innocent citizens, I would like to think most Christians would leave at least the church.
Ask her what she will do when (not if) the imam says to kill you, your family and your friends.
If an Imam gives orders to kill non-Muslims, that is a matter for the police, not mobs with torches, unless there is imminent danger of the order being carried out, in which case the right of self-defense takes precedence. But the general threat of Islamic extremism does not justify acts of arson against mosques or Islamic centers, or acts of violence against individual Muslims.