Eviction vs. Hold Over Section 8

[Jeff Lockshine]

I have a month to month Section 8 tenant who has not paid their portion of rent since the beginning of the year.  On March 1, she was sent and confirmed receipt of a letter of non renewal and notice to vacate.  I gave her 90 days.  I also posted her 3 day quit notice after the 90 days.  She has been dragging her feet and claiming all kinds of reasons why it is taking so long.  I am still being paid by Section 8.  

Finally, yesterday, after several weeks of 'I'll be out soon' messages she asked what she should do with some of the bulk items.  Put them out for pick up or what?  (her words).  I told her she needed to take everything with her.  She did not like that response and told me via text message that I will need to file for eviction (along with other threats of discrimination, illegal action on my part, etc which are all bogus).  I would really prefer not to evict.  What are my options as she has  packed up most of her things except for the bulk items mentioned?  Do I tell her just leave everything along with the keys and I will handle it?  At what point is it considered abandonment as she clearly is not living there?  Do I still need to give 24 hours for entering the unit?  When can I change the locks?