Land sold to two persons

Hello Sir/Madam, I brought a plot in 2016. In the same year, I took possession of land and, constructed 7 feet wall, and dug a bore well. I am also paying the tax and also have an electric connection in my name. At the beginning of 2022, I started my house construction. But, the day before the ground floor rooftop casting, the police come to the plot and force us to stop construction work. Someone claimed that the same plot belongs to her and she brought the same plot in 2014. We verified her entire document of her and found that the same copy of the sale deed and land mutation document was with us. She didn’t pay any tax and never visited land after on. She filed a criminal case (IPC 144) against me. The police commissioner favors us constructing the building after 1 month in the DGP office. In the meantime, she filed another criminal case (IPC 144) against me. DGP dismissed that case and allow us to build a house on the same plot. I completed my construction and now the case is in civil court. One more thing, she filed all cases (criminal and civil) against me, not the seller. Would you please give suggestions what is the merit of this case? Thanks