Alright, let’s take a look at each of these scenarios in which there is clearly grave matter and each person has sufficient refection:
Scenario A: Alex has sexual thoughts entering his mind, and after having them enter for sometime, he suddenly realizes he’s having sexual thoughts and fights them. Did Alex commit a mortal sin for waiting sometime to realize he’s having them and then fighting them, or does the fact that he didn’t realize he was having them until then mean that he isn’t guilty of a mortal sin? Would the circumstance of how long he had these sexual thoughts make a difference .
Scenario B: Mark is struggling with angry thoughts towards certain people he’s argued with online, as he continues to struggle with this, his thoughts turn towards believing that these people hold certain views that, in reality, he doesn’t know whether they hold them or not. Suddenly Mark realizes that judging someone with absolute certainty, based on limited evidence is a mortal sin, and pulls out of these angry thoughts. Did Mark commit a mortal sin by waiting so long to pull out of those thoughts? Or did the fact that Mark pulled out when he realized he was having those thoughts mean he wasn’t guilty of mortal sin? Would it make a difference depending on how long he had those thoughts before he realized the thoughts he was having were grave?
Scenario C: Sarah was having extremely angry thoughts regarding a Pro-Abort politician, as the thoughts continue, she starts to wish death on the politician. After a couple of moments, Sarah then realizes that wishing death on someone is a mortal sin and takes her mind off of this. Now did Sarah commit a mortal sin by wishing death on a politician, and then taking awhile to realize how serious that is? Or Did the fact that her conscience kicked in and she realized what she was doing, stopped thinking those thoughts prove that she wasn’t guilty of a mortal sin? Would difference whether Sarah had these thoughts for a shorter or longer time?
Please realize I’m not using precise Moral Theological terms for these scenarios.