Hank Hanegraaff, R. C. Sproul, Ravi Zacharias, Alistair Begg, and John MacArthur, I was able to answer her question in a reasonable way.
So, why don't all religions lead to God? Let's look at four major world religions. Buddhism teaches that there are no gods and that we must achieve complete selflessness to obtain enlightenment.
Hinduism teaches that there are many gods. Also, those who live a life filled with good deeds will come back as a higher life form. If they are wicked, they come back as perhaps an insect or a rat. Those who finally get their spiritual act together will reach nirvana, according to what I've learned about it.
Islam teaches that there is only one god who has no partners. Allah is portrayed by the Qu'ran as distant and uncaring. If adherents do good works and beg forgiveness for sins, Allah might consider letting them into paradise. The only way to be assured of salvation from hell is to be martyred in the cause of jihad.
Christianity teaches that God is a tripartite entity, being one what and three WHOs. Unlike in Islam, God so loved the world that he sent his son so that whosoever believes in him would have eternal life in heaven. And unlike all other belief systems, no human works are righteous enough to allow people into God's holy presence. Christ paid the price for those who turn from their self-centered ways, ask forgiveness of their sins, and surrender themselves to his rulership.
As you can plainly see, none of these religions agree with each other. This is why history is filled with religious and sectarian violence.
From my study of these religious systems, I conclude that only Christianity corresponds with reality. The Bible has proven itself reliable through its fulfilled prophesies, textual consistency, historical accuracy, and understanding of sinful humanity's behaviour.
I hope to write at length about this and other topics in a new book called You Think You're Going to Heaven? Eternity is a long time and scripture shows us that there are only two destinations for souls after death: heaven and hell. I hope people think long and hard about this. According to Christ, there are no second chances after death.
Please check out my previous paperbacks. How I Was Razed is available from Amazon, Barnes & Noble, and Powell's Books. Deliverance from Jericho and When a Man Loves a Rabbit are for sale on my book page.