A power of attorney does not negate a guardianship or conservatorship. At best, a power of attorney might designate one's preferred guardian/conservator. Also, a power of attorney typically does not become a public record.
The scenes outside the "English" pub are obviously not in England. The building is not of the correct style and the vehicles do not have British license plates.
Josephine asks Stella to grab the large bills from the till. Paper currency in the UK is called a note, not a bill.
Earl talks about hiding the gold in the trunk of the Mercedes. In England, they call that the boot.