Recently, there's been more interest in this version of Mother's Day...

"Evidence suggests that the original idea was for a 'Mothers’ Day' — a day for mothers, plural, not a day for one’s own mother — on which mothers would get together for a day of service to help out other mothers who were less fortunate than they were, according to Katharine Lane Antolini, an assistant professor of history and gender studies at West Virginia Wesleyan College and author of Memorializing Motherhood: Anna Jarvis and the Struggle for the Control of Mother’s Day."

~ Olivia B. Waxman

"The Surprisingly Sad History Behind Mother's Day"

https://time.com/4771354/mothers-day-history-origins/