@RK: Your extensive worries about this subject is a bit to much and unnecessary.
She cannot cancel your green card, who informed you about this absurdity? There is no meaning in it.
In fact when she herself refused to join you in US and also has demanded heavy money as compensation, her intention behind the complaint can be established before court.
For the present you may just obtain AB, if need be and then handover this case to a good lawyer who will take care of your interests and further issues.
For passport renewal you can do it in Indian Embassy at US itself.