Sierra grew up in Rochester and served with her family in the church. Her parents who served for many years in kid's ministry instilled a heart for children at a very young age. After Sierra got her cosmology license and worked full-time for a few years, she decided in 2017 to leave it all for a call to ministry. She moved to Buffalo to start as a student in a school of ministry and to pursue the call she felt God place in her heart. After a year of schooling, Sierra spent the past few years volunteering and serving kids ministries, worship ministries, and also pursued personal spiritual inner-healing. In 2020, Sierra began attending NorthGate, growing in relationship with the community, and also married Andrew Thiel. As NorthGate launched its new River Rock campus, Sierra began to serve as the River Rock Children's Pastor.