possession of flat

Why gift deed? Whose flat is this? You have not stated the facts of the case.

The donor must be owner of the property legally. The gift deed is an instrument through which the immovable or movable property owner transfers his/her property to another person without consideration as a gift. ...

Repeated query.

See response in original thread and do not repeat same story.

However, if you are not satisfied with obligation of experts (being free of cost) you should consult a local prudent lawyer for proper appreciation of facts / documents and professional advise.