If in fact she filed for bankruptcy protection and owed you rent at the time she filed, she should have served you with notice of the bankruptcy as you would be a creditor.
If the automatic stay remains in effect, you should not file any legal actions against her until you successfully obtain relief from the stay or until the stay is lifted.
If she has continued to accrue rent debt post-bankruptcy, the post-filing rent arrearages aren't reduced by her bankruptcy.
We have no way of determining if, in fact, your tenant filed for bankruptcy protection, nor can we tell you the status of her case.
If you are not familiar with evicting tenants, it sounds like it would be a sensible time to consult a lawyer about evicting this person. Your lawyer can investigate the status of any bankruptcy filing. You may also attempt to do so through PACER (for a small fee) or through the bankruptcy court.

