It is never a small thing to have had a dream and lived to see it fulfilled, no matter how small the dream may be.
If you want a good thing to happen, you must try to believe that it will happen, or else you will make it less likely.
We cannot know what will come. Besides, if it is a choice between knowledge and hope, I would prefer her to have hope.
Sometimes it is better not to know a bad thing if there is nothing you can do about it... but it is cowardly nonetheless.