It wasn't that long since US independence and she would have been all too aware of her inability to intervene.
Although she reigned from 1837 to 1901, I'm pretty sure the period of contact Wade is referencing was sometime around or after the 1880's when these traveling / touring Wild West Shows became big deals! Now sadly not only are they long gone but so is the Big Time Circus about to fade into the sunset as well as this is the last year for the Barnum Bailey Circus. Although obviously different, there are many commonalities with those to forms of big production extravaganza entertainment. And America declared it's independence in 1776 which would give that interaction between Queen & those American Indians a bit over 100 years since declaration to maybe not seem so new anymore. Just trying to put this together in context myself as well.
It's a tragedy for the USA that their history was so mangled by the myth of the Wild West, perpetrated by cynical showmen like Hickock, and later the Hollywood film business. Even now a large part of the world (including many in the US) actually accepts all that stuff as factual.
Boy you said lots of good stuff this post! And don't forget what started all the hype!.. the Dimestore Novel & ever so creative newspaper writer! These writers would often travel West looking for stories to send back to their big Eastern newspapers & most weren't afraid to get a wee bit creative with the facts! This glorified gunslinger violence & tales of murderous natives sold & sold & sold! And sent many a naive city boy traveling westward into an eye opening reality.
Even now a large part of the world (including many in the US) actually accepts all that stuff as factual. Slavery didn't end with the civil war, particularly in the north, where it wasn't even made illegal.
Well, the truth was pointed out several times over the course of my various history classes! But God only knows what goes on in these schools nowadays! LOL Actually, schooling has become very PC & I can at least speak for kids around here getting the facts about such things. But in just a general observation, the Wild West & Cowboys & Indians doesn't hold the same allure to todays kids & in a lot of ways has been looked down on by many segments of society. It is all very UN-PC if ya know what I mean. Kids don't play Cowboys & Indians anymore thats for sure!
Now this last part about slavery not ending with the Civil War,.. if you are talking about America, Slavery ended in 1863 when President Lincoln declared it abolished with his Emancipation Proclamation. Due to the Civil War, some southern blacks didn't see and end until the war was won & the Union Soldiers enforced slave freedom.
The 13th Amendment (Constitutionally Abolishing Slavery) passed in January 1865, about 3 months before Confederate General Robert E Lee surrendering at Appomattox. It took until December 18th of 1865 for the last holdout state (Alabama) to accept & ratify the 13th amendment which once again completed uniting all of the United States as one Country!
Unless maybe you are getting fancy with the word "slavery" & are referring to more recently pushed positions on unfair practices that plagued some southern (Bible Belt) blacks like forced labor, debtors prison, prison labor camps & other types of classified re-enslavements or neo-slavery.
Most 'Northern States' experienced various forms of Gradual Emancipation before Lincoln's Union-Wide Emancipation Proclamation.
The world has been on a path of awakening, acceptance & growth for several hundred years now. It is my genuine hope that we continue to see all men equal & hold the same rights in the eyes of our laws and we are not only able to learn from our past, but not be held back by past injustices & instead keep progressing forward in a positive mutually shared existence.