I've let her know that her family uses things that she says (about me, about our marriage) to them against me - so I've asked her to be careful about what she says to them ( I even gave her specific examples). She promised to do so - and says she doesn't share things - but it keeps happening. We were talking about buying a new house - apparently she told them how much we were thinking about spending - because 2 separate people brought up the specific amount and referenced buying houses - and yet she denies telling them.