Seven months later and she's back from training at Glynco and in Hawaii for forever. A sworn in Marshal, Catherine is excited to get to work, be on the island she loves, and settle into the apartment she's so painstakingly curated into being her home. She's missed her therapist, she's missed the ocean, and naturally, she still misses Steve, but the ache has dulled into chronic pain and less a sharp stab in the heart. Kame picks her up with Flippa and she's so happy to see them, she's not even missing Steve picking her up from the airport. Well maybe a little part of her misses those airport pick-ups. The cousins catch her up on the news, the restaurant will be opening soon, everyone's okay and happy, Kono is not back yet, oh and they're thinking of opening a third truck. She tells them she's now a federal agent and that she's excited to be back. Once they drop her off, Catherine, for the first time in months, is surrounded by silence. Silence used to be comforting to her, but now it reminds her she doesn't have anyone waiting for her at home, there's no husband watching tv, no pitter-patter of little feet anxious to see their mama, no dog coming up to give her wet kisses. She resolves she needs a tv in her room and probably a cat, Kame won't mind.

Thankful that she spent the holidays in training in Glynco, she settles into her life and realizes it's been almost a year since she's relocated to Hawaii. She's been Steve free for fourteen months, which is the longest she's gone without checking in on him by way of dropping into headquarters or via Doris. She feels weirdly empowered, although she knows if she thinks about Steve for too long all the feelings and emotions will float to the surface and threaten all the work she's diligently been doing to become a better person. Her heart screams for her to surprise him and show up at his house, but her head says that she needs time before she can be friends with him, if ever. And that time is best paired with distance and no communication. She will always love Steve, but right now she needs to love herself. Seeing him, without being with him, just hurt too much when she had tested it by going to him to help her recover the uranium deposit. Steve and her stay "friends" better when they have no idea what the other is doing, and she's gonna do everything in her power for it to stay that way.

Catherine, fresh from her most recent therapy session, returns to her office before she's sent out for prison transport. It's the grunt work given to the underlings, but she doesn't mind it. The marshals aren't 5-O, but they do have lots of fun rounding up their fugitives. Life has been good; she's been dating, careful to avoid any of her old haunts, and successful at avoiding 5-O.

When Scott, the fintech playboy she met at a club, asks her out, she takes a chance. Before she knows they're dating, exclusively. Dating Scott is easy, he knows when to press and when to shut up, he's busy, but he makes time for her. Best, he doesn't expect anything at the moment, he knows she's been recovering from a break-up, that her ex felt like the love of her life, yet he's not intimidated. She thinks this could turn into something – and at 39 she's not certainly getting any younger.

She knows she's lucky; the Marshals waivered the age requirement for her because of her impeccable service record, her boyfriend is patient and kind, and her heart is healing. She enjoys dinners with friends and co-workers. Catherine gets along well with her partner and likes her boss.

Now that she feels a bit more grounded, she tells Grace that she's living on the island. It takes two lunch dates and one trip to Sephora before she's Auntie Cath again. Truth be told if it had taken Grace ten more Sephora dates, she would have gladly done it; she's loved Danny's daughter like a daughter for as long as she's known her. Rachel and Catherine become "friends," their bond forged by the mutual love they have of Grace and their unresolved feelings for the men who lead the 5-O task force. Convincing Grace to not let her father or Uncle Steve know she's back on the island has been difficult, but Grace has missed her so much, Grace is willing to comply – for now. Catherine tells Grace she needs still a little more time before opening that can of worms and a helluva lot more therapy hours. Grace tells her of the big birthday bash her parents are throwing her, the intimate dinner at the restaurant being thrown in her honor, and of the 5-O family party that will happen at Uncle Steve's.

Catherine feels terrible that she can't attend any of Grace's birthday parties, she's a fucking adult. She should be able to be in the same damn room as her ex and his current girlfriend, she could bring Scott, but she's scared. Her therapist thinks it's a good idea to go and celebrate Grace. She mulls over her decision for a few days before she decides that she'll take Grace and her boyfriend out to lunch with her and Scott; then she might make an appearance at the birthday bash since it's neutral territory. Intimate dinners at Steve's restaurant and family fun day at Steve's are entirely out.

On the day she's set to have her double date lunch, Catherine is excited! Who would've guessed? Although she still thinks of Steve daily, there's less pain and more appreciation for what they did have. She's picked a beautiful place out on the waterfront and told everyone to wear their best; she even took the day off work to get ready with Grace who's been on spring break. Grace initially didn't like the idea of Scott, until he bought her a Louis Vuitton crossbody for her birthday – now unsurprisingly, the teenager is a huge fan.

They chat about her life, her boyfriend, Will, her parents who she thinks are secretly hooking up, how much bigger Charlie has gotten, and what colleges she's been looking into attending. Grace tells her she wants to go to college on the mainland, possibly UCLA. Grace doesn't mention Steve and Catherine doesn't ask.

Catherine doesn't tell her that she knows Danny and Rachel have been intimate recently, it's not her place. She knows Danny, and his girlfriend were on a brief break, and Danny had sought out Rachel for comfort. It's not her business, and she got no right to lecture Rachel or divulge this information to Grace. Rachel had told her over wine at Catherine's place that Danny had gone back to Melissa and how that had broken her heart. Catherine understands, and she listens to Rachel, empathetic that Rachel will have to live with Danny loving another woman for the rest of her life because of the kids. It makes Catherine thankful she's not connected to anyone in that way, although it would be nice to have a family.

After they're done pampering themselves and getting dressed, they watch an old rerun of I Love Lucy and wait for the guys. The adults will drive because they're not convinced of the teenager's driving skills just quite yet.