The Adams like some of the families who lived in the land of Bonelake had their own family cemetery which was isolated and built on their own lands to not include them in the local cemetery with the other family members. It was one of the lands that had been passed down from Belle's maternal grandfather which had minimalist fences around the land that they owned and the graves of the family members who had passed away.
Lucas had already got everything settled. He had spoken to father Connor to complete the ceremony of the dead so that they could be sent in peace which was what people of the living thought when in truth the soul was already departed.