Our Team


Tara-Leigh CobbleHeadshot copy

D-Group Founder & President

Her earliest memory is learning John 3:16 from her mom, shortly before her brother led her to Christ. Despite an early introduction to Christianity, she wasted years coasting on the second-hand information she learned from others. In 2008, through the gentle encouragement of a friend, she read all the way through the Bible for the first time. That changed everything. "I wanted and needed people alongside me in my pursuit of God -- people to hold me accountable for scripture memory and Bible reading and all the things that were bringing me so much newfound joy!" Out of that need, she started D-Group with a handful of strangers in a living room in 2009. She is a member of All Saints Church (Anglican Mission). She lives in Dallas, TX, where she has no pets or children -- or anything else that might die if she forgets to feed it.
 


CALLIE
SUMMERS

Executive
Director

DEREK
WINKLEY

Men's
Director

JOELLE
SMITH

Administrative
Assistant

callie-summers derek headshot for website joelle249
She grew up in a Christian home with loving parents, but her faith became her own in college. Her hunger for the Word of God flourished and she discovered the power of Christian community and discipleship relationships as catalysts for spiritual growth. A native Texan, she loves the beach and the mountains, and enjoys hiking, camping, and hammocking. She is a voracious podcast listener and book reader. She is excited to join staff and is thrilled to be used by God to strengthen His kingdom! Callie is a member of Watermark Community Church in Dallas. Raised in a gospel-centered home in Mesquite, TX, his father pastored a church. After being discipled into a relationship with Christ, Derek accepted a call to ministry and was licensed and ordained to carry the weight of preaching the gospel of Christ. He is currently completing his BA in Business at the University of North Texas while interning in Spiritual Formations at The Village Church in Dallas. Derek is married and a father to his beautiful daughter Aubree. He's a great addition to the team! Derek is a member of The Village Church Dallas Northway. Though raised in the church, her life didn’t always reflect Gospel transformation. At a low point in her early twenties, two women approached her on the beach to remind her of God’s love for her. His pursuit of her never felt more real, and she began to fall in love with Him, the One who heals and restores. Shortly after that, she joined D-Group -- and even five years later, she still counts it among her best decisions. Her desire is to live out the words of John the Baptist: “He must increase, but I must decrease” (John 3:30). Joelle is a member of Providence Wesleyan Church in Summerville, SC.

EMME
BILLAU

New Leader Training
Coordinator

JENN
SPARKS

New Leader Training
Coordinator

KATIE
WEBBER

New Leader
Training

emme jennsparks katie

BRIAN
SHAKLEY

Theology &
Resources

MELISSA
GRIMES

Theology &
Resources

CHELSEA
PRESTON

Theology &
Resources

brian melissagrimes chelsea

RACHEL
MANTOOTH

Events
Admin

JESSICA
IAROCCI

Events
Promotion

JOELLE
SMITH

Israel
Admin

rachelmantouth jessica iarocci joelle

MELISSA
WOODRUFF

Social Media Assistant

TERESA
HUDDLESTON

Leader Care 

BRITTNEY
MURRAY

Graphic Design

Melissa Woodruff - Social Media Assistant Teresa Huddleston - Leader Care Intern Brittney Pic 250x250

LAUREN
MULFORD

Theology &
Resources

NIKI
THOMPSON

Theology &
Resources

KIM
ABELSON

New Leader
Training

Lauren Mulford - Theology Intern niki KimAbelson - New Leader Training

ALLISON
CONGDEN

Audio Tech & Retreat
Hospitality Northeast 

KAREN
MERRY

Retreat Hospitality
Northeast

CELESTE
CERVANTES

Spanish
Curriculum

Allison Congden, AUDIO TECH EVENTS HOSPITALITY INTERN NE Karen Merry, Events Hospitality NE.JPG Celeste Cervantes Spanish Curriculum
 
ARLETTE
BLACKWELL

Spanish
Video  

 
  Arlette Tenorio Spanish Video Intern