You need to put your foot down before it goes too far! She's marrying your son & if she can't act like an adult & show respect in your home she doesn't deserve your son nor your respect! Respect is earned never give freely! You need to talk to your son about what you're feeling! She & her friend are already ganging up on you, you'll end up losing if this continues! Get some family counseling before they tie the knot. If they refuse fixing this family issue then object consent to their marriage! This would never be a problem in an Asian marriage, the son would never marry anyone who disrespects his mom! Hope you take care of this issue soon! I don't want to see on New Detectives or Forensic Files, Bride murder's In-law!