Good deed & karma

I received a phone call today at my work from a very nice woman who found my dad's wallet in San Francisco Chinatown. She was able to call me since my dad had my business card in his wallet. The wallet is in the mail now and I thanked her and asked her how I could provide reimbursement for the shipping and she said, "Don't worry about it. Karma points. Someday, someone else will find my wallet. Just go visit your dad more."