I insure my rentals with a commercial broker, Mark Roland with Four Square Insurance , that shops many carriers and tracks trends, etc.

Another way she could have phrased things is ‘I realized I had to file bankruptcy, and I caught a huge break because it turned out that all my debt was forgiven, allowing me to begin saving and get on a better track earlier than I anticipated.

And if their credit is trashed and they fail to qualify for a new place, then what?

Build a good track record and strong credit, as these can help you negotiate better terms.

They'll have resources.Also - check with your real estate broker regarding asking the seller for a credit (FHA allows seller credit up to 6% of loan amount) toward paying closing costs. 

For example, minimum 650 credit score and 3x rent for gross income.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

Reason:  Want to access equity for new business but credit not good so selling and finding a rental not a good option. 

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

If entities are disregarded, you can keep up with more than 1 in a single QBO account using the location/business feature to keep track of them separately.