The best place to start generally is to talk to everyone you can find and get their take on the events.

Walk forward toward the house to talk to Colton, Jess's fiancé. He'll give you Jess's phone, which needs to be charged.

How do I recharge Jessalyn's phone?

While the phone is charging, go inside the house and open the door on the right to find the parlor and Clara, Jess's mother. She'll give you the phone number of Addison, Jess's girlfriend who was spending the night with her before she disappeared; use Nancy's phone to call her.

Finally, go back outside and head for the cemetery, where you'll find Wade, Clara's cousin.

Where is the cemetery?

When that's done, Jess's phone might be charged; let's go check on it.

How do I learn the password to Jessalyn's phone?

And with that, things should run on their own for a while ...