Gosh, it almost sounds like the easiest thing would be for her to give you all gift cards!

What is your goal? Do you want each person to get the nights and points for their own rooms, or do you want her to get the points (and the nights for her own room, of course)?

If you all make the reservation in your own names, holding it with your own cards and checkign in with those, then she pays at the end, you will all get your own nights, point and status benefits. (Technically you aren't supposed to get nights/points if you don't pay, but it seems to happen anyways)

If she makes the reservations under her name, card, and pays, she will get all the points and the nights for one room. The other room nights are "lost" and I'm unsure on status benefits- having only done this in reverse (the plat making the resrvation/paying and the benefits flowing down)