No, the title of Kiran is itself incomplete and thus, any transaction by Ram in favour of his wife would be of no consequence and would not pass any title to his wife.
If the property belonging to your mother is herself acquired property then you cannot restrain her from dealing with such property. however, if the property has been acquired from the funds of your father and/or from joint family funds then in that case your father and/or you and the other members of the family can seek injunction against your mother by filing a civil suit in that regard.
Unless the Flat held by your neighbour can be legally segregated from his flat and also subject to the building plans for such flat being duly amended in the records of the competent authorities, the sale of only part of the Flat of your neighbour in your favour, would be defective .