So she can benefit from my gold status when travelling with me.
If it does not matter whether we are not on the same PNR but she can check in with me and board etc then it doesnt matter and we can book separately.
I did call the call centre and they said it could not be done.
no need to be on same PNR.
technically even on the same PNR there is no explicit entitlement to priority check-in or boarding, though practically i don't think anyone will stop you.
For lounge access it's completely irrelevant, the only thing that matters is being on the same onward flight.