Few other possibilities could be
1) Kabir somehow manages to make the guard drop the gun accidentally (maybe collide with him) and makes water to fall on the gun. Thoda filmy hai magar nishan to mit jayenge na.😆 rahi gavahi ki baat toh i'm sure kkn mein nobody will take shreya's side. So no nishan and no witnesses either.
2) khalid might instruct peon rahul to do the above. Somehow wipe the fingerprints away.
3) police complaint hua toh kya pata khurana khud hi fingerprints wipe karde. Waise bhi on only khurana they have shown in Delhi police untill now.😃
Jo bhi ho i dont think they will drag it to show Ananyas arrest, resignation etc etc. There is no time for all that. Even if ananya resigns i dont think Kabir will resign. He is needed to solve the case and media is the power he has in exposing RG.
Another thought though very silly and filmy hai. As Ananya had told Shreya uske do guardian angels hai, ronnie's lookalike may come and save her. Pichli baar divine intervension this time guaedian angel's intervention. 😆😆 i know bahut filmy hai par kya karoo dhimag ne logical thinking band kar diya hai kal ke episode ke baad.😕 anyways these are my ideas pls share your thoughts.