Goodman's most recent story on Instagram appears to be aimed at Walker. She posted a quote that read: "You only get: 1 first birthday, 1 set of first steps, 20 times to play tooth fairy, 1 first day at school, 10 times to be Santa, 5 nativity plays, 1 graduation, 1 first date, 18 summers, a few family holidays if you're lucky, 1 chance to be the parents you want to be. Don't miss a second of it... The days are long but the years are so short."