be silent. When they speak, they ought first to have permission from their husband. If they are unmarried, then that is even greater reason for them to remain silent. If, however, they are unmarried but there is something that compels them to speak, even though they shouldn't, they ought first to get permission from their father. If he is dead, they should get permission from any man in their general vicinity. Now, they probably won't know what "vicinity" means, so guys, you might want to use the word "area" when dispensing of this point with them.
Such behavior will free the world of disagreements, strife, and useless words, especially if we apply these principles to internet posts as well. Who's with me?