If they inform you they've vacated the property, or you notice its "abandoned" as defined in your state/municipal laws, you can take possession and still continue your eviction case to get the money judgement.

If Contractor has not cured such breach within seven (7) calendar days from its receipt of Owner’s written notification or if such breach cannot be cured within such seven (7) day period, then if Contractor either does not begin cure within such seven (7) day period or fails to diligently prosecute cure to completion, Owner may terminate this Contract and take possession of the Work.

Louis area experienced handling adverse possession affidavits

Taking in what I do know in my limited knowledge, one route might be to buy a performing junior lien off of FCI Exchange in order to actually get some paper in my possession. 

Trust me, getting possession back is almost more important than the balance owed.

If they don't vacate by their termination date, hire an attorney to begin the holdover eviction, if it's the city of Albany expect 3 months or more before you can regain possession.

If police have the time to set up speed traps and arrest people for possession of marijuana, they should certainly have the time to take care of real issues such as this.

Unless you want to give him a seller closing funds that equal the SD then I would listen to the folks above and require the Title company to make sure he releases that at closing.Once you have possession of the property you can always request the tenants to sign one of your leases that you use and make it M2M so you can boot em whenever you feel the need.

Threatening her to pay the rest of the lease may create more issues, since she still has possession of your unit.

Multi-Family Property Class B: Properties that frequently do not possess a design and finish reflective of current standards and preferences; construction is adequate; command average rental rates; generally are well maintained by national or regional management companies; and unit sizes are usually larger than current standards.