Laymans take:
1. If you were late with rent she is free to broadcast that truth over TV!
2. If the building is NOT up to code you have a major problem to sort out whose job it is to bring it up to code--and I'd suggest you review your lease with counsel TODAY and if its her duty to bring it to code you lean all over LL by 8:01AM Monday--you may have MAJOR liability issues with kids in a building which is not up to code!
If its your failure to bring it to code and/or its not clear--heaven help you if the situation blows!
My personal guess is she has very severe code problems and she is trying to induce you to breech the lease--do NOT give her free ammunition! This is not a home brew game to counter--go get legal counsel today!