Ok... this might be wishful thinking or so
Nevertheless... here's it how i think they can move from here on
Spoilers suggest Ratan would be rude to Veera... knowing Ratan I can't see her doing this until she has some good interest at heart... and what could that be other than to bridge the gap that has emerged between Ranveera
So as Ranvi is maintaining his distance, I think Ratan will be rude to Veera so that Ranvi gets back into his role a protective brother and an anokhi Ma...
I don't think Ranvi can stay immune to Veera's tears and pain for far and that may be what Ratan will put her bet on. She knows the ice needs to be broken NOW before it solidifies itself to permanency between Ranveera which she cannot let happen. She knows Veera is not at fault and though she has not been able to accept her wholeheartedly, she has never been mean or ever has acted with any ill-interest. She acknowledges time and again that the child is innocent and not to be blamed... so I think her efforts would be directed to being Ranveera together and get him to react... or make him realize that his love for Veera is all that matters! But then i have very minimal hopes of this to work right now
... coz Ranvi too knows his mom and knows well that Veera can never be at threat around Ratan!
Meanwhile... Baldev has already vowed that he's going to spill the beans to Veera... and we know Gunjan usually ends up spilling beans on him... So I think he would be the one to provoke Ranvi into the defensive mode where he'll plunge in between Baldev and Veera to shield his little sister as Baldev is one, he recognizes as threat who has time and again tried his best to hurt Veera. So may be Gunjan once again will get a whiff of Baldev's plans and caution Ranvi who'll rush to protect Veera from the pain of the truth that has scalded his heart and knows would inflict deeper gashes on her tender heart.
So may be... the evil Baldev would have some good comings to grace his childhood