But she said she was thinking, "I don't care if I get arrested. I'm saving this baby."
She very well might have. Officials looked at security footage and found the baby was left in the hot car for 40 minutes. The 1-year-old was taken to a hospital and treated for dehydration.
Radtke's brave actions are quickly making headlines – with most pointing out she was warned by onlookers and the security guard to leave the situation alone.
With the 27 child vehicular heatstroke deaths in 2014 so far, many of those cases making national news, it's surprising others were reluctant to help her – and those who were afraid Radtke would be breaking the law probably didn't realize she'd be protected by one.
Radtke was questioned by officials after the incident but was released without charges shortly after. The father of the child said he forgot the baby was in the car, and he's now being charged with child endangerment.