I'm a fan of gated yards and higher-end security doors and will install chain link and even some wood privacy fencing if I think the house/area warrants it.  

Take control of the situation yourself, and if you want her out, then give proper legal notice.  

The water may be backing up from another fixture that is not draining properly.

When you are small, there really isn't many concerns other than not knowing how to manage the properties properly.

Do you have the professionals you need to start an LLC, do the proper real estate/tax accounting, solid contractors to rehab or prepare the property, and a property manager to handle the day-to-day operations? 

That said, even with photos, comping homes in Detroit proper is extremely difficult.

Quote from @Gregory Chadwell: I wonder if having a lead filter installed on the property might help the situation too? 

Just keep the amount within any local rules and give proper notice.

Here is the new response:  "The Terms and Conditions were not properly displayed for the cardholder during the order process or on the same screen as the checkout screen before the final checkout.

One city near me is checking all garage enclosures, giving nice notice to get them permitted, which they may or may not grant, and if you don't get it properly permitted by December 31, says they will start fining people.