You might want to start thinking now, ahead of time, what your feeling (and stance) is going to be if you never DO get even an ACKNOWLEDGEMENT of anything, much less any stated REMORSE about it. But if everything else just resumes a positive trajectory. Are you going to be okay with that?
Personally, I never needed an "I'm sorry" (many BSs don't get one), but I DID need to see some sort of INTROSPECTION -- some indication that my wife UNDERSTOOD the deep pain her destructive choice had caused the family, of why she might have done it, and what she/we might be able to do going forward to ensure that it never, ever happened again.
If you just get a big "Look, let's not go there," but otherwise things all resume positively . . . how will that do for you?