Hello: The facts stated, to me, are confusing - is this a rent regulated unit? perhaps you may want to invest in a consultation with local counsel.

Hello: IMHO, try to address this issue in family therapy before you consider legal action,

Hello: Your case may be on e courts or e filed so you can verify online and if not, check with the clerk.

Hello: This will also require work on the co-op shares too. The plan, by-laws, etc. should set forth procedures on this. In any event, this...

Hello: First, you are no longer married. Second, are you seeking an interest in her estate? This can be a process with no guarantee so best...

Hello: Parties are not divorced until the court signs a judgment of divorce.

Hello: It is at least technically a trespass.

Hello: An application to the court but that would not affect the past arrears.

Hello: By settlement or court order.

Hello: In most divorces, custody will always be an issue no matter what. IMHO, retain counsel to work out a plan to start the process.