Why did the grandmother feel so helpless when her granddaughter went to attend a marriage?

The grandmother felt helpless when her granddaughter attended a marriage because she was likely concerned about her granddaughter's safety and well-being in a social setting. Additionally, the grandmother may have felt a sense of loss or sadness, realizing that her granddaughter was growing up and becoming more independent. This mixture of worry and nostalgia often leaves older generations feeling vulnerable as they confront the changing dynamics of family relationships.