Default Notice under section 25 & 28

My parents had taken a loan against a property in Delhi 20 years ago which was defaulted long back. My mum is an illiterate housewife and would have signed wherever my father would have asked her to sign without knowing what she was signing for. The secured property was given on rent and was later on occupied by the tenant in lieu of a fraction of the amount of the secured property. 5 years ago we purchased a small apartment in my mother's name other than that we do not have any property apart from a car that I bought 2 months ago. I have not received any inheritance from my father. 19 years after we had last interaction on the mortgaged property, we received a notice yesterday from DRT under section 25 & 28 of recovery of debts and dues act, inviting us to represent our case against the bank in a week's time. I googled the section and it state that under section 25 all movable and immovable properties can be attached, and defendant could be prisoned as well 1. My question is, can the recovery officer attach the new property in my mother's name to the banks claim (Even though I paid for the property but just bought it in my mother's name)? 2. Is there any possibility of prison if my parents are unable to clear the bank dues? 3. Can my mother transfer the new property in my wife's name and would it still be liable for attachment to the banks claim? 4. Can the bank sell the mortgaged property even though it's been occupied by somebody else? 5. If the mortgaged property is sold, then who would be entitled to any surplus over the dues? 6. Would I be entangled in any legal proceedings because of my parents non dues? Thanks, Raj