Of course, Seehorn isn’t the episode’s director and writer, Peter Gould, so her interpretation of the ending might not be strictly canon. However, she revealed that Gould wrote the final moments of the show purposefully vague so that the audience could draw their own conclusions:
“I know Peter wanted to write an ending – and he masterfully did – that, when the screen goes black, it’s not just that there will be people who think one thing over the other. It is that people will continue the story in their head , that it’s a story that is still on a trajectory that is going. There may be different opinions about which direction it is going, but it’s such a smart ending because it really honors the larger fictional questions that the show raises about actions and consequences and nature versus light and morality and unconditional love.”
In short, the ending is entirely up to the audience’s interpretation. Will Jimmy and Kim continue to keep a relationship, or are they heading their separate ways? Does she forgive him for everything he’s dragged her into, or does she not? All of these could make sense within the framework given by the ending, and perhaps that is its ultimate strength; it trusts the audience to form their own conclusions rather than spelling them out in detail. While that might work for some shows, “Better Call Saul” always thrived on ambiguity, and thus an open-and-closed ending like “Breaking Bad” wouldn’t fit it.