Abby returned in Remember the Devil, after tracking down both Will and Jay when she came to Chicago. She then showed up outside CPD and met Jay, asking him to sign their divorce papers because she's about to get married. He told her he'd signed them but she said she didn't file them. He says they'll talk about it later.

Jay told Erin that they were married for a very short period of time in a hasty decision made at a friend's funeral, as they'd both been in the Army Rangers but they got divorced, or so he thought.

They later meet at Molly's, where Abby revealed that she isn't actually getting married and that she's back because she still loves him. He tells her that she deserves someone better, so he leaves, giving her the signed papers, but she doesn't file them onscreen.