Would this work?

I think that time has come

Ishita has been pivotal in bringing Ruhi back to Raman and changing the equation of the relationship between father and daughter and with aplomb! She did this her way... At times even going against Raman and doing what she believed was right (she has kept things back and just gone ahead and done what was needed to resolve issues... prime example was the DNA test...she just did it and told him later). She is not scared of his anger when she goes against him if she believes she is doing the right thing!

I think Ishu has this sixth sense that her Ravan Kumar is avoiding the subject and not telling the truth about the accident... She of course will find out (Jagga Jassos) or he will tell her whichever way! Not sure but either way it will obviously hurt her and make her angry she will understand that it was for Adi but it wil still upset her...

She is maternal and also knows how much Adi means to Raman, I believe her thought process will be that she needs to use this situation to get Adi sorted...and bring him to where he can be disciplined...She has seen what his current upbringing so far has done to Adi. She knows that's what's needed for Adi and she also knows Raman would be overjoyed and completely over the moon if this were to happen... This way of resolving the current dilemma (probably after speaking to her Amma) would be synonymous with her character (proved when she spoke to Bala about Adi's tuition)

We all know she is capable of playing a game to achieve her objective (like the act with Mihikas's joothi engagement and keeping it from Raman)

Therefore she is really capable of going to Shaguns house after she has found out that it was Shagun that created the accident and firstly give her a lecture (bichari Shagun) and return the 30000 rupees that she took from Adi... Then give her the ultimatum that Adi should be bought back to Bhalla house and to Raman for 6 months else she will go to the police and report the crime...Shagun will probably convince Adi its only for 6 months and probably push him to go and stay there to avoid jail (selfish aurat) and will probably have insigated him to wreak havok while staying at Bhalla house.

Can you imagine Ramans joy when Ashok and Shagun come to drop off Adi (as he wont know that his JKR has gone ahead and done all this!!) and then the conversation bewteen the two? It will prbably be loving but full of Nok Jho like it was after the riots when he was actually really proud of her!

Raman already loves ishu (though he doesn't know it yet ...lol) but if Ishu is responsible for making his words to Ashok and Shagun come true, I am sure he would fall in the Ishk wala love types with Ishu... Of course abhi kehna wala to nahi hai (stubborn hai na)

It will another story altogether while Adi stays with them. To sort him out and overcome all his attempts to cause havoc will then be a joint effort between Ishra, Ruhi and the whole Bhalla and Iyer families. They will need to show Adi what life and family is really about...I can even imaging Ishita taking him to some poor people lives and showing him the value of money and totally sorting his head out!!! Each time and each step that she takes in handling Adi of course is being noticed by her Ravan Kumar... and he would be even more proud of his JKR! Like he said yesterday baap ko sambhal liya bacche ko be sambhal legi!!!

Also Ishu would never use the kids to get to Shagun. So Ruhi already does know and now Adi will slowly but steadily understand what real love is through his experience of living with people who care about you...Ruhi has such a nice relationship with her Romi chachu.. It will be nice to see Adi spending time with his chachu, dada dadi, bua (yuk!!) Mihir mamu/chachu. The kids will never be rude to Shagun (Ruhi is always cordial to Shagun) but they will know what is right and what is wrong and make the right choices... and you never know Adi may be the one who shows the mirror to Shagun to show her her own ugly truth!!