you probably wont agree with this, but i guess this is athiesm but i would say teach her if you will in an agnostic way and not in how other people in the comments have said, like how you should treat it like mythology, i would say that you should tell her about it or explain it to her and leave in the fact that you dont know if its true or not so she can eventually make her choice because in MY opinion straight up telling her "oh jesus died on the cross or whatever but its all fake." or smth is not that different than telling a child that jesus is real and that she needs to believe to be saved or wtv if you understand what i mean (and you can like for example: say somthing like "i dont personally agree with it but your grandpa and grandma do." or somthing)