So just weighing up options that work for her, and all of our family, both financially and for wellbeing.

But, if things go well. so far, i've heard from my brother that the owners of the property we are aiming for, are being difficult and wanted us to make the offer before looking inside the physically looking inside both the units of the duplex. 

In many cases it may be physically impossible. 

However, as you stated, Memphis can vary significantly by street, so I recommend visiting the area personally and observe the specific streets and surroundings, or doing a zoom call with a trusted realtor who has physically been there. 

Instead of using the check scanner and scanning the physical checks individually. 

There are some exceptions (OO high LTV loan in a market that has not appreciated since the current financing), but to find one that is an optimal investment RE you might as well be pursuing a unicorn.Best wishes

You would really have to interview the brokerages - physical and virtual.

I called the police and they say the theft is only civil and I have to go small claims, and the threats aren't criminal because its not physical violence. 

It's important to note that this isn’t a PO Box; it's a mailbox that provides a physical street address.

An easy way to find those properties is to compare mailing address to physical address.