1. The sisters have taken the right step to file a partition suit,
2. Hope the buyers of the said 15 acres of land have been made parties to the said suit also praying for cancellation of the registration of the said sale deeds which has been executed and registered without the consent of all the legal heirs of the owner of the property being the sisters,
3. Delay taken by the Court is a different matter which you shall have to counter separately,
4. Ask your lawyer to make mention or file a petition before the Court for early hearing,
5. If you do not get any favourable order, file a Writ Petition before the High court praying for a direction upon the court lower to hear and dispose the case within a fixed time frame,
6. The Court lower will act based on the direction to be given by the High court in this regard.,