to pull a Roxanne
means that you as a mother reunite with your son (whom you mistreated for most of his childhood) and after a single long heart to heart conversation and revealing your reasoning for everything, he forgives you and you're now part of his Life again.
Person1: "So, tomorrow you'll see your son again after 15 years."
Person2: "Yeah, I hope I can set things right"
Person1: "I'm sure it's gonna be fine, you just have to pull a Roxanne"
Person2: "Yeah, I hope I can set things right"
Person1: "I'm sure it's gonna be fine, you just have to pull a Roxanne"