You know what happens when the root of the problem hasn't been identified and you try to solve it from nowhere- then watch the last few episodes of PAB. I don't blame Sony Khander Rao today (for the first time) for his obvious reactions. If you discover suddenly that someone was actually pretending in front of you, you'd definitely burst out in anger. Infact Harku Bai suggested Ahilya that she may disclose it once KR befriended her after the execution of her plan. This infers again that she has not the least idea what's the root cause behind the rude behaviour of KR towards Ahilya. If she knew, she'd definitely understand that it can't be solved through fake tricks by Ahilya and it would worsen the situation even more.