Tenant stopped paying rent after notice to vacate

[Ellen Seagul]

Hi, 

Looking for some advice on how to handle this situation. I recently purchased a multifamily home to Owner Occupy. I gave the current, who is month-to-month 90 days to vacate. She has stopped paying rent. Should I proceed with the eviction process or would the cash for keys option work in this situation? How would you handle this. A couple of issues: I'm in Philadelphia and my rental license is pending approval. I just received an update that I need a Certificate of Occupancy so I'm not sure how long that will postpone this process. I was however going to still issue the 10 day pay or quit notice today. Any advice would be helpful