I have found that those with the proper knowledge in how the software works, and of course know how to use the software, would agree with your post, including myself! 

As long as you mom can qualify on her own (with her credit score), I don't think adding you to the loan application would hurt even though your score is not good (but I would still double check that).

I do all of the work except for contract review by broker and they pay for the pm software and overhead of having a physical location for the brokerage (although rents collected and owner payments are all done online).

It may be a situation where you need to either learn more accounting or hire this task out.No other software is going to help you as the same mistakes you made in QuickBooks will be the same mistakes you make in any other software.  

That's always your friend when you can't find a software to accomplish what you need.As you're scaling your portfolio, it pays to scale in 1 or just a few areas so you can have all properties with the same utility companies, management, etc.

Better locations = better tenants (assuming your PM company screens properly, I always want first right to green light applications until my PM understands with crystal clarity on what type of tenant I want.) 

But we have a handful of MTR and there is no data software..

If you know where the tenant works (perhaps from their rental application or a neighbor or facebook), you could serve the notice elsewhere. 

Foolishly, we initiated the application process with them before looking up the reviews and will already have to pay a cancellation fee if we do decide to back out. 

I'm currently exploring software options to support our Acquisitions Department and would appreciate some recommendations.