Nothing to do with being a christian. Just do it to be a decent human being.
Let's face it, you aren't religious so you probably don't even care about her that much.
It's not creepy. She will like it, you can always play it down and say your wife bought too many and you thought she would appreciate it. It's a good deed. If she doesn't like it (I really can't see this to be the case) then screw her, more fool her.
I would hundred percent suggest you do it. Te alternative is a very lonely and sad Christmas for her, I would do it as a Christian.
That is the point...
I really do not want to go there at all.
Just wanted to be nice to another human...and as I thought..it would be creepy.
It can be hard to nice, people always think the worst.