If that makes you or your wife uncomfortable, you could consider a property manager who would be the contact for the tenant and require all property communication to go through them.You need to be well-informed regarding laws in your area. 

You may have stronger systems set and better contacts then I.

If a problem arises the lender can have nightmare thoughts about trying to contact the investor that is thousands of miles away from the property.

Message me and I’ll be happy to pass along their contact info.

Twenty is just enough to warrant someone living onsite to manage but not enough to pay someone other than free lot rent.I would try to contact the owner if possible and see if they would just sell it to you for what is owed on back payments plus a small amount. 

But if they are vacant how do I find the contact info of the owner is my biggest thing.Of anyone can help on how to dive into the datatbase and find owners of vacant property .

Do you wait for the sheriffs sale date or can you contact the owner/lawyer?

I have a younger sister today that is about to begin college and I continue to put in her head to always be in contact with her advisor.

I will PM you contact for a plumber I've used many times. 

Contact a local attorney that does real estate and have them draft a loan package on your behalf.