The bank possessed it around 2 years back and have been listing it since (As per zillow). 

This Security Deposit will be held until the Tenant surrenders possession of the premise, and may be returned after proper inspection of the leased premise by the Landlord in compliance with the Pennsylvania Landlord-tenant Act.

"Drug-related illegal activity" means the illegal manufacture, sale, distribution, purchase, use or possession with intent to manufacture, sell, distribute, or use of a controlled substance (as defined in Section 102 or the Controlled Substance Act [21 U.S.C. 802]) or possession of drug paraphernalia. b.

It seems most (and I may be using that term loosely but it's my impression) lease to own and seller financed type MH deals end up foreclosed (seems some investors even plan and hope for that) so it ends up back in your possession just like a rental... except you got a down payment up front.I stayed away from MH, just couldn't get my mind wrapped around it right and my wife would have killed me based on her experiences growing up in one.

I remind tenants that they should have renters insurance to cover their possessions. 

But if she does not pay an extra two months (after Dec 23 as a fine) the property manager will refuse to allow a qualified tenant to possess the property on or about December 24?  

Hand Release of Possession form with a smile.We have also had good luck with troublesome residents saying exactly what you just posted. 

You should ask your attorney (I would personally try to find someone that markets themselves as a marijuana business attorney actually) to draft a rental agreement that includes as grounds for eviction any growing, using, selling, possessing or anything else pertaining to cannabis (which a good local RE attorney will know the specific laws of). 

Once you have it in your possession, under contract, the buyers will find you.

To reiterate @Bill S. and again, no lawyer, but this is how we've handled it.If you have a signed lease with the booted tenant, you can't just rent out his place to someone else without regaining possession of the premises.