One good deed deserves another

Friday I buy my chicken and coffee and cash register froze as I pay with my card, waited fifteen minutes so cashier told to pay for it tomorrow, I say OK, it was $11.59,she came out and asked for sure would I be there Saturday to pay, she say OK, I did not know when register came on she paid so this morning on my day off, I went paid her and give her extra $5 she thanked me😊