The Rebbe blesses the recipients with a good and sweet year, emphasizing the vital role of a Jewish woman as the foundation of the home. He highlights her responsibility in shaping the spiritual and material well-being of her family and assures that Hashem grants the strength to fulfill this mission. The Rebbe connects this to Rosh Hashanah.
https://www.torahrecordings.com/rebbe/004_igros_kodesh/tishrei/775