Amending an existing lease without the buyer's written consent after the effective date is expressly prohibited in the current version of the form.

If she lied because she's trying to pull a fast one and have her boyfriend live there with out your consent.

If it were me, and I'm not an attorney, I would quit claim deed the property into a revocable trust/land trust (if your state recognizes one), which is acceptable for estate planning purposes and won't trigger the due on sale clause.

After reviewing the monthly statement I realized that the expense was well above the dollar limit that requires a prior approval by me.When asking the manager for explanation as to why was the expense so high and why it was approved without my consent, she replied that the they had purchased a whole new appliance, rather then repairing it (without much info as to why it couldn't be fixed) and that I was notified of the need to repair/replace.

From the estate planning aspect, the system I like is having a revocable trust (irrevocable if you have high net worth and need additional asset protection) and Family limited partnership, these would then house your other assets and entities.

A search indicates that NC requires completion of the Residential Property and Owners' Association Disclosure Statement regardless of whether an agent is involved or not Correct, but the parties can also give written consent to waive it. 

Can a property manager remove a tenant without my consent if they have made payments on time?

Lender may still require written consent to transfer into a wholly-owned LLC-- the loan docs govern what you can and cannot do.

To pull money out requires both owners consent and would not provide either enough money to but out the other because 100% LTV loan is not an option. 

If one of my PM's is going to take intentional action without my consent that is going to cause a tenant or someone else to sue the PM or myself, I wish the PM good luck in arguing I should indemnify them.