Conflicted

I know normally I write fun updates and things, but this time i write because I'm a little more confused than I thought I would be. about Santa.
We've taught Madi that Christmas is about the birth of Jesus Christ and that is what we should be focusing on, especially this time of year. We are teaching her that we need to focus on giving and helping other people... but we get lost when it comes to Santa. I most certainly won't tell her " there is no Santa" or "Santa isn't real", but I also don't want to just blindly tell her that a man that she's never met comes into our house at night and leaves her presents - if shes a good girl.
This has come up because lots of people that we've chated with over the past few weeks have just outright asked Madi if she's excited for Santa to come, what she asked him to bring her, and if she has gone to see him. All of this Santa talk has confused her, because we hadn't talked to her about him yet. I fumbled when she questioned me about it, and John told her that Santa is a nice story. he didn't expound - just that he's a story.
I never thought I'd have this problem. To me, if you're Christian, you would obviously teach that Christmas is about Christ. But where does that leave Santa? We're trying to figure out how to make Santa part of the spirit of Christmas, and giving, and that he's a symbol of Christmas ... but I don't think it's working out the right way. Even in writing this out, I'm confused...
I'm not asking for everyone who reads this to tell me what to do, I'm just wondering if you've faced this question in your parenting, or how you have decided/dealt with this puzzle? And then I also hope that those who do offer advice, or are in contact with our children will respect that in the end, we will TRY to do what we feel is right for our little family.
I feel like I'm floundering and hope that someone out there will be willing to share what has worked, or hasn't worked for them.
Thanks you guys!