I've been to Australia several times and can assure everyone that while the immigration officers I dealt with were polite,they never left any doubt regarding just who was the foreigner and who was enforcing the laws of the Commonwealth of Australia.
Actually, she had a visa, so she had a British Government given right to enter and remain in the UK. She also had British Government given rights to call someone and to have the complaint signed in her presence.
The only right left to her after the big keychain a**holes were done was her right to complain from off-shore.