I'd write a check made out to both tenants for the deposit amount, unless your lease specifies how it is to be distributed. the drunk is the one threatening you damage not the other party.

Hard path: threaten to evict.

if the tenant does threaten to sue or makes a big fuss then i generally offer them the option listed in 121 d and let them move on. 

The daughter tried to threaten me with police because her idiot parents misread my email wrong to send the application to...then she tried to change her story when I explained things to her and her excuses with apologies made no sense.

She threatened to sue for all of the costs they'd charged her that were completely unreasonable maintenance costs and lo and behold, they decided to waive the termination fee.But, people should know that most PM contracts will charge them to find bad tenants, deal with bad tenants on a regular basis, deal with maintenance issues that are hugely overblown, then deal with terminating bad tenants, and then to find another bad tenant, and even to fire them.  

I didn't accuse anyone with abuse or user damages.I have tried to be transparent about the issue, explaining I have been threaten with fines for doing work, service call fees are double/triple the costs, and it just comes down to, its cheaper to buy a new dryer ($475)To add to the issue, I have a 3rd year law student and the other unit is some 24 year old that works at a Big 4 Firm who think/view this is an unimaginable inconvenience, and the law student is citing all sorts of legal codes on why blah blah blah is a certain way, but obvious has never been to small claims courts where paperwork and circumstances matter greatly, or the costs of having to deal with the this stuff is problematic.

His agency threatened to terminate him if he violated a government employee movement restriction by leaving the local area (50 mile radius) of his primary residence on record which had left as his parent's house which is 90 miles away.

If she asks for an outside hose bib, do NOT do so, unless it's in the lease that you will provide this.If she threatens to withhold rent because you haven't done what she is demanding, don't respond. 

Also, I am always against threatening something that you can't follow through with.Another option would be to do clandestine showings.

Give them an official notice and threaten to name her on an eviction.