Does anyone have experience of QR allowing family members to visit J during a flight if they're booked in Y?

For context, my family may be on the same connecting flight from DOH and my younger sibling (9 years old) has never flown in J before. The flight is currently a Q-Suite (fingers crossed it stays that way!) so I would expect minimal disturbance to other passengers. I would love to give her some experience of the hard product although not sure if that's frowned upon on QR.

Many thanks in advance.