Hmmmm...DVC hasn't been running for twenty years. If her use year is February, and you back out once she's booked the room she runs a real risk of losing her points. There are stages of being able to cancel.

Yes, she either has to use, bank, or lose her points yearly. Renting them is an option.

I guess I'm a little confused. I thought you were renting points from a company, not an individual.