Once you have met with an attorney and established an attorney-client relationship, the opposing party cannot hire that attorney or get legal advice from that attorney. The situation you described sounds more like you have spoken with a friend who is a lawyer, that lawyer hired your ex's sister and now says he can't talk about your case anymore. That lawyer can refuse to give you any more advice, although he should not be giving advice or revealing information to your ex, either.
Answered on Apr 29th, 2015 at 1:16 PM