Does anyone have experience booking a rewards room for someone else or adding their name to the reservation? My girlfriend is hoping to make an upcoming stay at a BW and I want her to redeem my points. I probably won't be joining her and if I did I would be getting there a few days after

I am a Diamond Select member so I would like this stay to be connected to my account to get the 10% discount on free night redemptions if possible. Is there any good way to do this or will I need to gift my girlfriend the points and have her make the reservation herself? Is there anyway to get her name added to the reservation?