Pursuant to the yoyo matchmaking agenda, she starts a text thread with Mel and Frank where she just sends a number, counting down daily and refusing to explain it or elaborate.
She’s counting down until Frank’s one year sober. She’ll give them until he hits the milestone to figure themselves out without her (actively) meddling. But once Frank’s lost that justification, she’s not letting him find another reason to not be happy.
I usually don't love misunderstandings in fiction, but I do kind of enjoy the fact that Frank and Mel keep missing out on learning things about each other, that maybe their coworkers now know, but the flow of information between them is interrupted, so their getting together is delayed.
Like the fact that they're both history nerds, they don't know this about each other yet, they don't even have a single coworker who knows this about them both, so when will they find out.
Similar thing with Frank's sobriety. I'm currently dying on the hill that Frank, in order to get a good grade in recovery, will adhere to the 'No big life changes in your first year of sobriety' rule like it's law.
I think that's why he sounds so defeated when he says 'but Abby stayed', because if Abby had made the decision for him, if Abby had forced that change, he'd have been sad, but they'd have figured out a schedule with the kids, and he'd be able to rebuild his life.
Instead, by staying, Abby has put him into limbo, because he has realised that this life isn't working for him, that Abby and him are strangers, that she doesn't really like him all that much, and now he's stuck. Because he's not meant to get divorced in his first year of sobriety, that's a huge decision you shouldn't make in this state of mind. So he makes amends and tries to be a good husband, an endeavour he has been failing for years, and he's miserable.
Abby stayed, so he has to stay.
Even if Abby had left, he shouldn't get into a new relationship during that first year. So Mel is double off-limits.
In a world where Frank isn't already sleeping on Yolanda's sofa, he's sleeping in the guest room of his house, trying to figure out if he wants to earn his way back into his marital bed, or if he should just let the clock run out until big decisions are allowed again.
One night, when Abby and the kids are with her parents, he ends up on Yolanda's sofa anyway, and maybe it's because he hasn't talked to her properly in over a year, but it all comes pouring out, he feels drunk just letting go of the pressure, even though neither of them are drinking. And he admits what he wants. He wants a divorce, and he wants Mel, and that's not necessarily the order of priorities here.
Yoyo listens, and calls him tragic, but she does hug him and she tells him to please please please talk to his therapist and his sponsor about this, because he admits he hasn't dared to, because she's sure (and she's right) that those recommendations are based on experience and circumstances, but not every piece of advice about rehabilitation fits everyone. In fact, with all this pressure and misery, he's putting himself at a higher risk of relapse, because the urge to escape is so bad.
So he does, and his support system mostly agrees with Yolanda, and they're glad he said something, and Frank ends up asking for what he wants. Abby is almost as relieved as he is when he says he wants this to be over. She stayed because it's what you do, but she doesn't want to be there either. They work things out, they sell the house, they work out a custody agreement, they go their separate ways as much as they can while coparenting. Frank still struggles, with money, with sobriety, with his schedule, with the pressure of it all, but at least this one big thing is off his plate, and he feels infinitely lighter for it.
"So when are you asking Mel out?"
"No new relationships during the-"
"---first year, I know. Sooo... in time for a New Years kiss?"
"Since when are you a romantic?"
"Since you've started pining after a girl who I'm pretty sure has a group of woodland creatures commuting across town to help her get dressed in the morning. I'd be less invested if your heart eyes weren't this severe. Does she know why you're not making a move?"
"No, and don't fucking tell her. She might not be interested at all."
The chat pops up the next morning. 'Mel and Yolanda' it says at first, and then the group name changes to 'Count your days' and a picture of a firework.
"Is Doctor Garcia going to murder us?" Mel asks him the next day.
"Oh no, only me, probably. Don't mind her."