So I have free access to the Plaza Premium Lounge via Priority Pass. It looks like I need to book the Private Resting Area for USD $90

For the private resting area, can my wife and I share, or do we need separate reservations? Or can I “sneak” her into my room?

Just to confirm, the resting area includes a shower?

And FYI, here is the cancellation policy:
Cancellation and Amendments

1. For bookings including Private Resting Area and/or Transit Hotel Room, cancellations/amendments must be made no later than 24 hours before the booked usage or check-in time. A fee of USD10 per person or 25% of the total booking amount, whichever is higher, is payable;
2. All other services: Cancellation/amendments may be made up to 6 hours before the indicated usage/arrival time. A fee of USD10 per person is payable.