Breach of trust

As a family contingency measure, I gave some amount of money to my mother in law before 10 years. It was agreed and verbal agreement that the money will be put in fixed deposit on her name. Entire amount was transferred via bank account transfer to her account. Deposits after 5 years matured and then it was decided to put money in MF in 2018. So entire some of money put in Mutual Fund via directly transferring money from bank account to the MF folio, She helped to get the money transfer from her account by extending pin received on the mobile associated with her bank account. In Oct 2018 my wife left home as she developed affairs with someone else. She is right now staying with someone else without taking divorce. I asked them to extend help to get my money by selling MF. For two, three transactions in laws extended help and they transferred money. One transaction in laws refused to transfer money asking that we can provide you money only in case divorce is filled in mutual consent and they can provide only after divorce petition filed. I asked them to give money as this money was not earned by my wife as she was housewife. There is still majority of amount lied with MF on her name and in laws are not ready to extend cooperation of give money back. Please note that entire transfer of money is via bank transfer so it has all documentary evidences. With this context kindly advise, if there is any case of criminal breach of trust or breach of trust can be made.