At least Kabir is not a fool, he's not being played by ma ki Mamta infact he's using her against Vansh and on the other hand Vansh and his stupid trust on AP, he's being used by her.
On the other hand, Kabir is still a goodie goodie in Ridhhima's eyes while Vansh by not trusting her at all is making it difficult for her. How would she tell him the entire trust if he's never believing her and trusting his mother blindly.