UPDATED | October 16, 2015 11:23 AM

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DALLAS (CBSDFW.COM) – The family of murdered Dallas teen Zoe Hastings has released a video.

In the video, Jim and Cheryl Hastings talk about their 18-year-old child and her love of people and the church.

They talked about their daughter’s desire to serve as a missionary. “I do talk a lot about my mission and because I’m an artist I’ve done lots of pictures about my mission and I’ve talked to my kids about it throughout their lives,” Jim explained.

On October 15, Dallas police said they had new clues in the murder of the teen. Investigators said Hastings stopped at a Walgreens store on Garland Road to return a Redbox movie Sunday evening. From there the teen was headed to church. She never made it.

Hastings was found dead inside of her family’s van in a creek on Monday. Officials still have not said how she was killed.

In the video released Thursday, pictures of Hastings, at various stages of life, fade in and out as her parents are interviewed. Also on Thursday, Hastings’ family held a vigil at Norbuck Park on and canvassed an area around White Rock Lake, where her body was found.

During the video her mother, Cheryl, said, “She was just happy.” Her father agreed and recalled that, “Last week, on Friday, she put a note out on our mailbox. It was a questionnaire for our mailman… she just wanted to like know things that she could give to him to kind of brighten his day when he stopped by to drop off our mail.”

The video message from the Hastings family closes with Zoe Hastings recording herself, talking to her baby sister, “Olive, I love you. Stop crying for Mama.” The teenager then kisses the camera and smiles.

Zoe Hastings was a recent graduate of Booker T. Washington High School and worked at White Rock YMCA. Her funeral will be held Saturday at The Church of Jesus Christ of Latter-day Saints on East Lake Highlands Drive in Dallas.

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