My niece just told me that she wanted a WN gift card (of course she couldn't have told me that a few weeks ago for all the sales

) for Christmas. I want to give her a $200 card so that means I can't take advantage of the Costco $500 deal.
I have a $50 LUV voucher....is that transferable to her or can it be used to buy her a GC?
If I buy a GC to send her via their website do I get Rapid Rewards points?
Thanks