As I said above, the British ruling class are nothing but resilient and flexible. The idea they'd allow themselves to be harmed covering for Johnson or his weird aspie mate Cummins is laughable. The rot stops at Johnson and he will be thrown to the wolves. There's more chance he ends up in jail than the Queen cops any blame for this.
The Queen will get away with it because she can simply state she was lied to and agreed the proroguing based on false information
She's not going anywhere