1. Yes, the said daughters of the deceased ttle holder of the property can claim the said property.
2. If they can prove that they were not informed about the fact that your father had mutated his name in the land records by filing an application for which they were not called for hearing, they can construct a case in the instant matter.
3. Ordinarily yes for 12 years but in the instant case they will say hat they had allowed you to live therein being relative as they stayed elsewhere being married.
4. You can claim adverse possession which might be contested by them stating that you were allowed to stay therein as relative since they were away from the property being married for which it is not a case of adverse possession.
5. If possession of a property is taken and kept for a period of more than 12 years against active resistance/objection from the real owner of the property, it is called adverse possession. In the instant case they have not actively resisted your possession for 12 years.