The only one who would have suspicions is Sanchi. I am sure she is not over avenging Jagya as of yet and will do some things to get back at him. But even if any of the other Shekhars suspects Anandi's feelings for Jagya, how does it matter as long as Shiv supports her. And looking at the way he asked Sanchi to shut up, he has realized his mistake and he would not suspect or question Anandi's intentions ever again.
I don't even understand why Jagya was talking to Sanchi. He should've just left as soon as the case was done. Would've given the Shekhars more time to feel ashamed at what their daughter has done, and more so their inability to tactfully handle their daughter and the situation.
And yeah, don't think Jagya will go to KB now. Even before he never really went willingly. He was always sent by DS or Sumi to send gifts when he went to Udaipur for other work, and other times Ira insisted on him coming to visit them. He hardly ever went there of his own will.