Pet Fee/Emotional Support Animals- Illinois

[Shannon Gauthier]

We have had the same tenant in one of our units since 2015. It is now time for lease renewal and she doesn't want to pay the pet fee for her new lease term because she claims her dog is an emotional support animal. She has never stated this to us previously, nor has she provided any paperwork. We understand that once the paperwork is provided, the pet fee shall be returned to her. But without providing paperwork, is t she still obligated to pay the pet fee for her new lease term? If she refuses, what are our options?