If she knows, then she has new reason, and new hope, to struggle against the disease, which has her in its grip. And if others know, they too have equal motivation to do so. And just as it is fitting to pray for what we strive for, so it is necessary to strive for what we pray for. Some people are so sure that they know the will of God that they are prepared to go to jail for it. Some people are so sure that they are willing to use poisonous gas and kill for it.
People can do evil so cheerfully when they do it from religious conviction.
That's tempting, because it's so easy. But it's a temptation that needs to be resisted. There are some things which are in the Bible which are contrary to the spirit of Christ and therefore, these statements are no longer authoritative for us. The regulation that requires women to be silent in church, is not one whose flouting is going to cause me to lose any sleep over. Of course, all new learnings deserve to be tested in the fires, but surely there is help there for those who would discover the will of God.