she is trying to get you to tell the sheriff to stop the eviction. she can seek a stay from the court for a week but you should insist that the tenant post the rent for that week.
There is no such thing as applying for an "extension". She could possibly either be filing an ex parte application in the state court which granted the writ of possession -or- she could be filing a petition for bankruptcy. However, neither of these will successfully stop the sheriff from completing the lockout.
The information presented here is general in nature and is not intended, nor should be construed, as legal advice. This posting does not create any attorney-client relationship with the author (who is only admitted to practice law in the State of California). For specific advice about your particular situation, consult your own attorney.