There have been tons of threads on this and what it comes down to is pretty much this.

It may work, but according to the terms, the benefits are for an individual, and the individual has to be there. Despite the people who will say it never happens, there are some hotels that will not award benefits unless the person whose account is being used stops by to show they are there (I know of two where I have had to swing by the desk when I got there after my wife has checked in).

You can try it, but don't be upset if it doesn't work.

By the way, Hilton doesn't care who pays for the room, they only care that the member's name is on the reservation, and they are in the room.