This was a football game anyway ~ not a singing contest.
The lady's father is an American military veteran.
I’m an American military veteran, too, and if my daughter or granddaughters ever did something as disgraceful and disgusting as that, they would have me to deal with. Two of my granddaughters sing the national anthem at a local race track where their father is the announcer and I have had many people tell me how much they enjoyed hearing the song done right, not thrashed and trashed by some ignorant tramp of a “celebrity” like this woman appears to be. I don’t know much of anything about her but I found out all I need to know yesterday.