Maybe it is fine since you are 100% owner, but that would be worth talking to a CPA or tax professional. 

If she leaves and takes the stuff she wants I'd be fine. 

For "Okay" I would say Little Italy, Baynard Village, Brandywine Village are fine.

@Forrest Faulconer The logic you present for low housing inventory being fault of Boomers.... well first off it's just so mind-bendingly bonkers insane.... but playing into it that same twisted logic can ALSO justify it is the fault of Millennials, because if millennials would just keep renting and stop buying homes everything would be just fine for the rest of us. 

Go over the numbers with a fine tooth comb before you decide to pursue further.

And indoor air quality is fine with a modern gas furnace. 

If a particular Builder wanted to buy them all, then that would be fine.  

If it has been inspected and hasn't been deleaded yet, you can't rehab until you get a lead certificate of you'll get fined for unauthorized deleading (UD) and you'll never be able to get a lead certificate.

I always submit a FOIA request (Freedom of Information Request) to the city before I buy to confirm zoning, fines, judgments, violations, outstanding water bills or other issues, ongoing code enforcement issues, etc.  

I find the more I talk to them the more I learn, it also helps with fine tuning my strategy.