The Number- A Matthew Riddle Fan Fiction

Diana keeps getting texts from an unknown number for three months straight. Everyday she'd receive an address, recipes something weird from that same number, not leaving a single day. One day, it all stops. Diana gets worried. She decides to go through the messages the person had sent, only to realize they had been sending SOS signals. Diana immediately contacts the police and tracks down the number, only to realize that Matthew's house was a demonic ritual site, and only she could save him from there.