I applaud this attitude and the wise words from her grandma.
Too many people have forgotten a simple principle: respect is earned through respect.
British people are among the most welcoming in the world, but that welcome has been taken for granted by too many people coming to the UK in recent years.
When I was 4, my grandma visited me in the UK and gave me a piece of advice:
"When you are a guest, you must behave extra well.
As a guest in the UK, you should never take advantage of them, because even the greatest tolerance has its limits."
She was entirely right.