Second Degree murder only requires that your actions were without regard to the consequences. She may not have planned to shoot the person she did, but she should have been aware that getting off at the wrong floor, going to an apartment that her key did not fit and that a welcome mat that was not hers should have led her to a proper conclusion that she was not at her apartment.
However, she disregarded all that and shot a man anyway.
Good points from both you. I hadn’t thought about it that context.
Thank you.