Please help me and my family pray for my sister

Dear lord please help my sister who is in the hospital getting worst and worst and the doctors can’t find anything wrong with her. Please lord have mercy. She is so young and has a kid that needs his mommy to be there with him. I know lord that your with only one word can save my sister and hive her another change to live. Please lord help her, you and only you lord is her medicine. Amen