To us, Alyson will always be Willow from "Buffy the Vampire Slayer." But at home, she's a mother of two. The "How I Met Your Mother" star, who met her husband on the set of "Buffy," welcomed her second daughter on May 23, making 3-year-old Satyana a big sister. So how does the star balance it all? "My husband is incredibly supportive," she told Wonderwall earlier this year.