Heavy period after c-section and getting tubes tied

I don’t know what group to put this in but I’m asking for a friend who had a baby a month and a half ago, she had a second c-section and had her tubes tied and it’s her first period after birth. I’m just trying to give her advice but I never had a c-section or had my tubes tied and I was hoping to know if anyone else has experienced this before. And what is considered normal. How many pads used during a heavy period is considered normal or not. I did tell her to keep an eye on how many pads she uses but I’m not sure what is considered normal for a heavy period.