It's pretty amazing what a great backstory they established in one episode. The last one... ehhhh. It was nowhere near as good and disappointing to say the least but there are so many possibilities for stories with Cara and Dahlia whether they be based in canon during their time as Mord'Sith and in Stowcroft or AU where the events in Unbroken went a bit differently.

Cara/Kahlan is a great ship, but for myself, writing them is a huge challenge with such a gigantic canon true love relationship to get around. And it doesn't help that I genuinely like Richard and Kahlan as a couple. I just like Cara more.