When you do eventually tie the knot, you not only marry the man but also his entire family. That being said, how would you respond if your future mother-in-law tried to interfere in your marriage by deciding whether or not you should adopt your spouse's last name? The story below is an account of a frustrated bride. Recently, the original poster (OP) and her now-fiancé announced their engagement. Things were going great at first, but as soon as the future mother-in-law got involved, things quic…