What should I expect when I call the number provided by the county to dispute the value?  

No one could possibly dispute that right.

What happens if there is a dispute between the other tenants and her?).

@Michael Plante if they dispute that claim, remind them that the trees were not fallen at the time of contract and you're not even asking the to REPLACE the trees LOL

Unless, of course, you don't plan to be around for the long haul...https://www.biggerpockets.com/renewsblog/colossal-fail/Below is an excerpt from an article in Pension & Investments...Wall Street investment firms with real estate management subsidiaries created the strategy of co-investing to coax wary investors into real estate portfolios the firms had bought through the Resolution Trust Corp., a federal program begun in 1989 to liquidate assets held by insolvent savings and loans.The idea of shared risk with managers gave investors comfort and worked to draw them into these investments, explained Ted Leary, president of consultant Crosswater Realty Advisors, Los Angeles.

Make sure that you keep documentation (i.e. receipts for painters, supplies, etc.) on hand in the case that the tenants try and dispute the charges.

If you have that you should be in good shape -- because you'll also have written proof of her infraction against the bank, so she won't want you showing that to anyone in a later dispute ;)Newbie investors are often posting questions here on "do I REALLY have to live in my property for the prescribed time after getting an owner-occupied loan?"

also you can google credit bureau dispute letters and get an idea of how to write letters to experian, equifax, and transunion, to correct mistakes on your reports.

Things dont always go well when the landlord and the tenant dont agree.....

http://www.chicagobreakingnews.com/2009/07/police-cook-county-illinois-chicago-united-states-counties-cook-illinois-landlord-tenant-stabbin...

There are credit specialists that can clean up your credit through the dispute process.HML's can be used for wholesaling REO's, kind of like transactional funding.