1. Only option now remaining to claim possession, title, is to have the said "transferred title deed" declared as null & void, via a Civil Court order.
2. Based on both the Agreements, File Declaration Suit in local Civil Court, against Aunty & Ishwar and seek directions to Revenue /Municipal authorities to mutate /transfer the property in your name and cancel the transferred title deed.
3. You can ALSO file a Police FIR, requesting investigation and charge-sheet, for offences like Trespassing, Cheating, Intimidation, Fraud, Breach of Trust, Mischief etc.... against Aunty and Ishwar supported with all relevant supporting Documents, Evidences & Witnesses.
4. IF the Police does not take action, THEN you can file private criminal case u/s 156(3) Cr.P.C., in the local Magistrates court, seeking directions to the Police to investigate and file charge sheet. The said Person may come down for settlement.