98 y/o mom! Wow! Give her a hug for me! I lost my dad when he was 50, mom at 79.  Memes are very effective at planting seeds of truth in their minds without opening a conversation ending in an argument. Truths need no defense. Soon they will seek understanding of upcoming current events, and recognize that you were on the right path right along. They will have much to learn and understand, when they are ready for it.