With some google, out of 4.2 million participants there were 4 deaths caused by direct injury with all ages of football in 2021. There were another 13 from related injury (heat exhaustion, heart issues, etc.) You put your kid in greater danger transporting them in a car than putting them in tackle football.
It’s not about the argument being factual. She’s just been told to get out there and give the left an argument, any argument, to counter “the vaxx killed him”.