Claiming to be filing for bankruptcy is not the same thing as filing. As long as she has not filed for bankruptcy, creditors can still take actions against her.
The practical problem lies in that if she did not have money to pay you before, where would she get money to pay you now?
On the other hand, if you get a judgment, it will be good for a few years. Maybe in that time she will get some money.
If she hasn't left the premises yet, you still want to evict her. The debt is dischargeable, but you can still pursue the rent provided she doesn't file bankruptcy. People will lie about their intention to file bankruptcy all the time. Until you have proof that she filed, you can proceed as normal. If you start eviction proceedings and she files, this will stay eviction and you will want to consult an attorney to help you get the stay lifted.