Perhaps you or another tenant would like to install a ring camera again and problem solved.

I am thinking about strategically placing cameras in some vulnerable areas both indoors and outdoors.

You can hire a security guard, use fencing/gates with camera's and alarms or just not invest in neighborhoods that bad I guess.

They will change their minds, but you gotta put up cameras and be prepared yourself to deal with any partiers.

Cameras and microphones are everywhere.

I suggest you change the locks, give her keys, and have her buy some security cameras that she monitors through her phone.

It's fully equip with exterior arlo cameras, Nest and keyless lock.

I have purchased an Arlo camera so that I can find out for sure who it is but I'm not sure what I can do legally once I find out if it is the occupant I think it is.

I'm going to digital entry (four students, they lose keys a LOT) and smart home features (like turning off the HVAC when doors and windows are open because students are apparently idiots and do, in fact, air condition the whole darn neighborhood), plus a few exterior cameras. 

. - i.e. digital door locks, wifi controlled thermostats, ring camera on the exterior entrance.