When was Mae sad in tuck everlasting?

Mae Tuck experiences sadness in "Tuck Everlasting" during the moment when she realizes that her family is trapped in their immortal existence. This is particularly poignant when she reflects on the loss of normal life and the inevitability of her loved ones never aging or experiencing the natural cycle of life. Her sorrow deepens when she faces the threat of being separated from her family, highlighting her longing for connection and the weight of their eternal circumstance.