out of all the broken trios, Jolene/Marabelle/Cobb is a little bit the most interesting.
to start, they're basically the second one introduced overall. they establish that Alanis/Thiala/Ulfgar is the beginning of a pattern, not an isolated incident.
second - we know the most about them the fastest. while it takes a while to build to backstory as to the why and how other heroes separated, Cobb explains what happened to his adventuring party the first time he's asked. they are also visited in narrative flashbacks more often than any other trio, iirc. we get to see Jolene fighting alongside her daughter in the endgame, saving the One Hells. Cobb is basically a member of the Boobs for two entire arcs, and comes back at the end for a bit. we see the most from them when it comes to fights and supporting new heroes.
third - their reconciliation is poignant and immediate. but it's also possible. Aryox is long gone, and Telaine likely wouldn't have heard him out. Thiala was a fascist, Alanis will never forgive her (nor should she). there is reconciliation possible and that happens for other trios, but not in the same way. when Cobb leans down it's because he's already forgiven Marabelle's mistake. Moonshine knows she can pretend to be Jolene because Jolene, too, would immediately forgive her sister. and when the context is explained to Jolene, all the ill will she ever had for her sister (which was likely low at that point) washed away.
fourth - Cobb and Jolene clearly and without exception remain a duo, friends, together, even without the third member of their party. Marabelle's assumed betrayal hurts them, certainly, but it does not have a long-term effect on their friendship. we don't exactly see independent duos with the other broken trios. not from the outset. when Jolene takes her place as the MeeMaw, Cobb remains. he's a stalwart defender of the Crick. there's nothing anyone could say to get me to believe he wasn't sent to Galaderon on Jolene's request, as he does in the later episodes when he travels to Irondeep and helps the Goo Gone Gang. he's an institution at the Crick, he makes the best fireworks shows (non-magical) and is someone everyone knows and cares about, in a place where someone he could have avoided due to baggage is in charge. but they don't really let the issues break apart their friendship. not that we can see.
and finally - it's the one that, now, we see as the most broken. Jolene was always going to outlive Cobb. it just happened tragically, and likely sooner than she expected. when we return to the Crick in campaign 3, an argument could have been made (by me, to me, at least) that Cobb was out on a scouting mission, and that Murph did backflips to get the Boobs to leave him behind in C1, so why would he tempt them with him again (this is a joke, to be clear). but that's not the case. he's gone, and Jolene is alone. the only member of her party to remain. Alanis let the breakup of her adventuring party crumble her: she meddled with the world for centuries, trying to right her wrongs; she’s still doing work to make sure Thiala’s actions don’t destroy the world and she may never be finished. Jolene would never fall into that path. she keeps working toward the advancement and protection of her community, even when it's threatened. she stays the defender of the Crick that she always was, the woman we know as an audience. she won't rain arrows down from her towers, she will always shine a light.
broken trios break the people in them. we have seen most of the other broken trios as shattered parts of the whole, where the individuals, even if they come back together, continue to show the baggage of their break. Cobb, Marabelle, and Jolene are the exception to that second half of the rule. and a little bit that’s because of the Crick and how they were raised and continue to live, but it’s also about who they are as people and how they (Cobb and Jolene) seemingly actively chose to not let what happened ruin that.
and if you were to ask me? the band of boobs will follow their path, especially given that hardwon is on his way back to them.