In 2018, Trynin joined Band of Their Own, an all-female supergroup formed to perform at Hot Stove Cool Music, the annual benefit show supporting the Foundation to be Named Later, the charity established by former Boston Red Sox and current Chicago Cubs executive Theo Epstein and his twin brother Paul Epstein.
Band of Their Own also features among others Kay Hanley, Freda Love Smith, Tanya Donelly, Gail Greenwood, Magen Tracy, and Jennifer D'Angora.
Trynin married Q Division Studios co-founder Mike Denneen, who produced Cockamamie, Gun Shy Trigger Happy, and Gift to the World, in 2000.
[4] In November 2018, as a tribute to her late husband, Trynin and her daughter performed "Stacy's Mom," a hit song that Denneen produced for Fountains of Wayne, with Letters to Cleo at the Paradise Rock Club in Boston, featuring Grace on lead vocals.
They performed the same tribute with Band of Their Own at Hot Stove Cool Music in February 2019, also at the Paradise Rock Club and again with Grace on lead vocals.