Prayer for my sister's successful operation

My Sister is now in the operating room because she needs to have a cesarean section (CS). She’s having difficulty during labor. It will be another painful and long day for her.
Pray for my sister’s successful operation and also pray for my new niece to be healthy. Pray that everything will be alright. Pray for her speedy recovery, and may the Lord will give her the strength that she needs to ease the pain after the operation.
Thank you so much!