Would not be downplaying (or eyerolling) that. Our norms are not their norms.
To give a bit of background just how batshit that place is as it is pertinent to understanding the potential danger OP's is in if he doesn't come to his senses.
Circa 30,000 die via firearms in america every year, over 80 per day (UK its around 50 per year, thus "there are more deaths via firearm in a day in america than the UK in a year").
Drug deaths, especially opioids (fentanyl being the worst), there are over 72,000 opioid deaths in america every year, 200 every day, last figure in the UK it was 60 in a year (so three times more per day that the UK in a year). Again an enormous difference.
They have slave owners (jefferson, washington etc.) on currency. Imagine holding a banknote with the face of jefferson, a racist ("blacks are inferior to whites in the endowments of body and mind"), rapist (raped at least one of his 600 slaves), pedo (his slave being 15 when he did) in your hand? Yet they do, and they have no qualms with it. This tyrant dehumanized the Native PEOPLE as "savages" in that white, imperialist document the "declaration of independence' (that as a result comes with a warning, as does the racist constitution).
No other civilised country in the world would have elected Trump, a racist, narcissistic, sociopathic con man, yet tens of millions of an exceptionally idiotic population, the gun toting, bible jumping folk (that whole area in between the two coasts, where homosexuality being illegal (sodomy laws) is still on the books (see image below with the states in yellow), where slavery (the ownership of human beings, Africans who were dragged over to work the now emptied land with the Native people massacred and the remainder ethnically cleansed and forced into reservations) would still be in place but for a war to stop them.
https://en.wikipedia.org/wiki/Sodomy_laws_in_the_United_States
There are sane people there, but it's a very split population where nutters number close to 100 million (a figure which also correlates with 45% of adults being young Earth creationists, ie. the Earth is 6000 years old and man walked with dinosaurs). The political figure Mike Johnson, he is one such young Earth creationist. Link on him below:
https://en.wikipedia.org/wiki/Mike_Johnson#Evolution
"Johnson rejects the scientific consensus on evolution in favor of creationism. He helped the Creation Museum secure millions of dollars in tax subsidies to build a life-sized Ark Encounter, which teaches the discredited claim that dinosaurs accompanied Noah on his Ark and that the earth is 6,000 years old. In 2016, Johnson delivered a sermon that called the teaching of evolution one of the causes of mass shootings: "People say, 'How can a young person go into their schoolhouse and open fire on their classmates?' Because we've taught a whole generation—a couple generations now—of Americans: that there's no right or wrong, that it's about survival of the fittest, and you evolve from the primordial slime. Why is that life of any sacred value? Because there's nobody sacred to whom it's owed."
That nutcase is the speaker of the House of Representatives.
It's basically red or black on a roulette wheel whether you will meet someone with sanity there or someone lacking in it.
So I'd be worried for OP's son as this girl appears to be among that circa 100 million. The culture she is surrounded by she is capable of anything.