My grandmother has just been diagnosed with cancer and is unlikely to survive

Dear God, please forgive that I have not been a very good person lately, but we have just discovered some awful news: my only living grandmother is very ill and has just been diagnosed with cancer. She is getting on in her years but I hope that she will be allowed a little longer, if you are willing. Please have mercy. She is not only a grandmother, but a great grandmother and much loved mum, and our whole family all love her very much. Please lord hear our prayer.