Wow, that was civil in word usage only. Very good use of euphemisms by the way. I'm pretty sure that you called her (and anybody else that believes in such) insane, among other not-so-flattering terms...just in a lot more words.
I'm sure you have all heard this before, but on the off chance that you haven't here goes.
We who believe, base our belief on the Word of God, the Bible, as I'm sure you all know. Many people however, find it difficult to believe that those things written are true. Why? We read about Columbus, the rise and fall of Rome, and many other happenings in the past that historians have recorded. We weren't there to witness it first-hand, yet we believe that these things actually happened. Why? What is different about the history recorded in the Bible and every other bit of history? One point is that some of the things in the Bible are difficult for us to grasp (miracles and whatnot) because we don't see these things happening today. As a result, we rationalize that since there is not way that those things could happen (it's beyond our comprehension) we assume, and rightly so, that if one part of the Bible is false, then all of it is false. For if God can't lie, and there is a lie in the Bible, then the Bible cannot be truly God's Word. However, we must be careful to properly distinguish between a lie, and an honest mistake.
Sorry to bring up the faith argument again, since it is viewed as a cop-out by those who don't understand it, but what is the definition of faith? Faith is "belief that is not based on proof" according to www.dictionary.com (sorry, didn't have a websters handy). If we have proof, then faith no longer exists; why do you think that Christ said that the least in the Kingdom of Heaven is greater than the greatest prophets of old? (sorry for no references, I didn't feel like looking them up, but He is speaking in reference to John the Baptist). That is because all those that believe on Christ, and therefore God, believe without seeing, whereas those that believed in God pre-Christ, did so because God was a very real aspect in their life. Oh, sorry, I'm referencing the Bible again, which doesn't work since you don't believe in it. Bummer, what to do.
"And this I say, lest any man should beguile you with enticing words...Rooted and built up in him [Christ], and stablished in the faith, as ye have been taught, abounding therein with thanksgiving. Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ." Colossians 2:4, 7&8 (sorry, I lied, I did feel like looking up some references). Logic is all good and well, I'm a huge fan of it myself. But as snowbird said, logic can only take you so far. I think it would be a fair assessment that this is a case of the tool not fitting the job. It's been known to happen, so why not now? Oh, wait, is that another cop-out? So I should just keep hammering away at the nail with a pair of needle-nose pliers just so I can prove that it's not a nail because it's not behaving the way it's supposed to? (that was a hasty analogy, but I think it gets my point across).
One last point. This is a question I commonly ask because it makes people think. "In 80 or so years, is what we're doing here on earth really going to matter?" If there is no God, then no, what we're doing here doesn't matter. But if what we do doesn't matter, then why are we here? To have a good time? Again, are you going to care whether or not you had a good time after you die? So what is our purpose?
I like to view our time here as a test, to see if we are worthy to be called the Sons/Daughters of God. Now, you can bring up the argument about God being Love, so a true God wouldn't "test" us. However, that is only half true, and many, many people make that mistake. They leave out that God is also Righteous and Holy. When you throw those two adjectives into the mix, things change drastically.
Anyway, don't take what I say at face value (not like you need any encouragement there), but why don't you go see for yourself? Leave your pride at the door (is it so important that you're right in regard to this?) and ask God, with a willing heart and the desire to learn the Truth, to guide you. Oh wait, my bad, you can't ask somebody for help if you don't believe He exists...that would be weird.
bk
ps. can't wait to hear the backlash to this...