In line at the grocery store

Standing in the grocery line at KingSoopers, a woman and two small children were at a different cash register. I continued on my line and kept my eye on the woman with the two kids because after ringing up the groceries some items weren being subtracted. She had limited financial resources. People in line were getting frustrated to see this and the kids were getting restless. I pulled the envelope from my pocket and after paying for my groceries, I walked over to her. Told her about our church asking us to give the money to someone and you are that person. She looked at the ten dollars and her face showed gratitude and it appeared like i gave her 100 dollars. I walked away feeling good that i was given this opportunity since I've been carrying the envelope for a long time. Am happy God put this person on my path.