It might come later i guess. there must have happened any incident where they started trusting mamaji and accepted him as family.. maybe he supported meetwa during that deep wala case.. meetwa must have shattered and mamaji handled him well..by giving guidance and proper support.. So Raj is like half-half accepted him..
after 4 months when Babita mentioned to Rajvardhan that Meet Ahlawat trusts Abhay completely and do not take any decision without consulting him first .. Raj was not pleased… and suddenly itna bharosa …