why is it so difficult to get rid of Bad tenants in New york?

[J DADD]

Tenant has not paid rent since August 2019, her lease is also up as of Feb 2020 and she was sent a 60 day notices by   the attorney that her lease is not being renewed, she still refuses to move, i found out that she has done this at two previous addresses, and she was recently arrested for criminal possession of forged documents, how do get rid of this tenant? this is in new york