What does the Queen think about the Brexit backstop..?

She wont be understanding a word of it.

Nobody other than those close to HM, and maybe the PM, will EVER know that. She very rarely makes a direct statement about political matters. Not to say she might, if the situation were serious enough however. She does make comments which if you really LISTEN, may give you a clue about how she feels.

HM Queen Elizabeth II stands outside of politics and does not express an opinion on any issue, ever.

The survival of the Royal Family depends upon their not becoming involved in politics. The political arena is for the 'Common People'.

Outside Westminster Hall next to Parliament here in London, stands the statue of Oliver Cromwell MP. This is to show all who pass by that it is we the people who decide, not the monarch, or some foreign potentate.

https://www.google.com/search?q=statue+of+oliver+c...

She has not publically expressed her thoughts on the matter. I am guessing that she is against it.

Horrible. Some say she's suicidal.

She hasn't shown much of an interest up to now, which is a bit odd, seeing as she is head of state.

The Queen thinks Brexit is complete madness.

The Queen does not publicly express political thoughts. She has to be apolitical.

I am guessing that it would never be used.

Not much, but her hands are tied and at the age of 90+ she doesnt want to get involved.

Personally though, I think she should have May executed for treachery with Gibraltar