One if you do not register your company as a foreign company you usually cannot file an answer in court if you are sued. 

Despite my concerns, I allowed the appraisal to proceed.

Squatters can now be locked out of a property and their possessions removed, but a landlord CANNOT physically remove the squatters themselves.The local police are supposed to enforce these laws and assist landlords in removing squatters.The reality is that when you call the Detroit Police to remove squatters:1) The police often don’t know/care about squatter laws and state you must take the squatters to court to evict them.

If so, I would consult an attorney on the best way to proceed forward.

My question is if she doesn't pay in 5 days, could I file a forcible entry detainer at the court ( We are in Macoupin County Illinois)?

Meaning you cannot just evict a tenant because their lease has expired.You will have to build sufficient evidence admissible in court and to the satisfaction of a judge to prove good cause to get a warrant of eviction.Many housing providers kept high risk tenants on month to month leases so that if the tenant stopped paying rent, you could simply give them a notice to vacate and recover possession of the rental unit that way.The reason for this methodology was because the HSTPA of 2019 passed in NYS made it extremely onerous and costly for housing providers to evict due to non payment.That method under good cause will be eliminated.So you can still keep tenants month to month but you will need to document the lease violation due to nonpayment rigorously.How many times and how late is “good” enough?

These logs regularly end up in the Tax Court and are usually destroyed upon review.

I asked if you know of the statutory support for it or court cases. 

Section 8 can be a profitable and reliable resource but it is 'their ball, their court' so know the rules first.

Proceed with caution when considering this program, as it may not live up to the grand promises it makes.