https://www.biggerpockets.com/business/finder/agents

Before becoming a designer, I was a systems engineer and business analyst (MIS degree), so my process is deeply rooted in formulas to keep the right elements at the forefront.

What aspect of their business, the property managment software or investment management software.

You may have to do this several times for all the different tasks being done.The only labor cost not covered by this type of online inquiry is drive time from the businessto the property, to the store & back for supplies and then back to the business address.

However the owners retired and her team left when she sold the businesses.

Do some smaller dollar private lendingA property is too capital intensive and $20k will not get you very far.You also did not describe what level of risk you want to take, so that is something also to take into consideration when evaluating where to invest.

I have questions about their business acumen though.

Our privately owned and centrally controlled monetary system, known as the Federal Reserve, and the legality of Fractional Reserve Banking is on a crash course for a battle between Freedom (Property Owners) and Royalty (the banks). 

My unfair advantage is that real estate is my job I have made a few different businesses out of it.

I'd like to meet the property management company and the business people(cleaning and handyman related) so I could paint a better picutre.Thank you for the info.