- A woman who worked at a florist shop spotted the suspect's car but didn't believe at first it was him
- Debbie Dills followed Dylann Roof while her boss called police
- She says God put her in position where she could help catch the alleged killer
- Do you know a hero? Nominations are open for 2015 CNN Heroes
(CNN)Debbie Dills was driving to work Thursday mid-morning with the terrible news about the church massacre stirring constantly in her mind.