As families across the U.S. prepare to celebrate Mother’s Day this Sunday, Allison Stern is looking beyond the single day of appreciation. Stern just closed $10 million in commitments for her debut early-stage fund, Mother Ventures , which focuses exclusively on the mother as a consumer. “In the U.S., moms are responsible for 85% of household purchases and have $2.4 trillion in spending power,” Stern (pictured below) told TechCrunch. “The numbers say that moms are the buyers, and they really