That's why the Lela thing is the first and only time we see either of them cry.
For different reasons, they were holding onto each other so tightly they couldn't even admit it to themselves, and when it fell apart, so did they. Which is a fascinating way to end things, with the abrupt dissolution of both the marriage and any semblance of a relationship between the two women. When Alicia returns on Sunday, having cut herself free from the last ties to her marriage and still pissed as hell at Kalinda, she'll have nothing else to depend on. What is a Good Wife without her Bad Husband? How do you keep your hands clean when you've lost your best weapon?
If you have ever had or overheard a conversation about the show lasting more than a few seconds, probably you made it to Kalinda. One of the most unique, sophisticated, beautifully drawn characters probably ever on television. Queer, silent, driven, empty, full, beautiful, ugly, and overqualified for any position whatsoever -- from Pope to assassin -- Kalinda's faults lie so deep and are so infinitely terrifying that you end up with this weirdly paradoxical need to protect her.
Because Kalinda's deal is a big part of the plot, I guess it's worth going over. Kalinda is an in-house investigator for Lockhart, Gardner who is a genius and kind of a sociopath. So far, the only thing she seems to actually care about, literally, like in an existential-void kind of absolute way, is Alicia. (Maybe Cary Agos, a little, but who knows about that.) When Will brought in a second investigator, Blake Calamar, what seemed at first like professional rivalry quickly escalated into all-out war. Bodies were flying, baseball bats were constantly in play, this doctor went into a coma, there was kinky and there was scary, Blake had ties to west coast gang activity, Kalinda was sleeping with FBI agents, it was insane. A total mess.
But then, in a truly stunning turnaround/misdirection, it turned out that Kalinda's previous identity (Lela, a Canadian with a husband who might be dead or something), her grand jury indictment, her ongoing physical confrontations with Blake, the sudden involvement of the SA and his third investigator Wiley, all of it came down to nothing like a stolen identity or a housewife on the run: Blake finally figured out that Lela slept with Peter years ago, for helping her create the Kalinda identity. That was it: Slept with a guy, fell into a profoundly loving relationship with his good wife, years later. Hated herself too much to come clean.