She 100% would know people will be looking into everything she does, she’s evidently seen a lot of the stuff all those Instagram pages said about her, she wouldn’t be that naive to think someone wouldn’t notice. Also, around Spa aka “break up” time, she didn’t post at all, it was like the longest she’s ever been without even posting a story. She could have done the same now if she was really trying to keep it a secret. But what possible reason would she have to be there without him, surely if they were getting back together and she had time free she’d … go and be with him? Not his empty apartment?