Their in the near future-to-become sis-in-rules are another arrival to your relatives scene, and you should not manage a position which can create the girl resent your within next 20 Thanksgiving edibles (not to mention the woman after that matrimony). For the moment, it could be top not to say one thing. But in the years ahead, if the regifting damaged or soiled factors becomes a habit off hers, you need to point out this lady mistake. Say something similar to “It is good your trying become thrifty and eco-friendly by regifting, but you need to make sure the present is actually a beneficial position.” Trust me: You will end up performing the woman a support.