Sona did right

I feel Sona did right by not believing Dev when he chose her over his maa. He was drunk and would no doubt regret it when he sobered. He would fall at his mothers feet and apologize, leaving Sona high and dry yet again. She knows him well now, he isn't trustworthy and will change colors when it comes to his maa

But I think he has realized Ishwari's true colors and will distance himself from her after the leap