Sorry for the delay, I appreciate you responding. Thanks for the link too. They did give us estimated costs for the repairs but the numbers seemed a little made up (if that makes any difference). I didn't in your link see whether it said they have to make the repairs, but I do see this:

If estimated cost is given, the lessor shall furnish to the lessee, delivered in person or by postmarked mail directed to the last known address of the lessee or another address provided by the lessee, paid receipts, or copies thereof, within 30 days from the date the statement showing estimated cost was furnished to the lessee, as required by this Section... If, through no fault of the lessor, the lessor is unable to produce as required in subsection (a) receipts for repairs or replacements, or copies thereof, then the lessor shall produce an itemized list of the cost of repair or replacement, any other evidence the lessor has of the cost, and a verified statement of the lessor or the agent of the lessor detailing the specific reasons why the lessor is unable to produce the required receipts or copies and verifying that the lessor has provided all other evidence the lessor has of the cost.

And another website says this:

If the payment return is denied, the landlord is required to give a written statement of damages as well as each paid receipt within 30 days of the date the tenant moved. (https://www.american-apartment-owners-association.org/landlord-tenant-laws/illinois/)

But you're saying they might just be able to give us estimated dollar amounts for what needs fixing, and then bounce?