My question involves landlord-tenant law in the State of: Illinois
Background info: My lease started on 6/1/16 and ends 5/30/17. I am a co-tenant with one other person. My boyfriend and I bought a house in January, and I have been living there since. I have continued to pay rent and plan on continuing to do so until the end of the lease. My old roommate and I agreed that she would transfer the utilities into her name, and has done so. I don't have a contract with her that I would not pay utilities after moving out, but I do have texts from her suggesting it. My roommate is extremely passive aggressive and childish (ex: I didn’t vacuum so she did it and emptied the contents on my floor), so this is not our first disagreement.
I have not had time to move all of my stuff out of my old house, and planned on doing this a little every weekend. My roommate went through the house and tossed everything I own into a huge pile on my bedroom floor. I was angry, but just ignored it. When she asked when I would have everything out of the house, I told her I was planning on doing it by that weekend (2+ weeks ago). Things came up and I wasn’t able to do it. She texted me today saying that if my couches weren’t out by Friday, she was going to put them outside because she was having new ones delivered. She says that even though I’m paying rent, I can’t store my stuff there.
I responded by saying that I’m legally allowed to keep belongings in the house if I’m paying rent, but if she wants to change that we can try to have my name removed from the lease and I will stop paying rent. Otherwise, she needs to leave my couches in the house until I can get them out. I told her I have no way of moving my stuff this week but would do it as soon as possible. She says it’s “not her problem” and she doesn’t care about the rest of my stuff, but she’s putting my couches outside on Friday. I told her that if she puts my couches outside and they are damaged (by either the elements or the fact that we live on a busy street in a college town), that is the equivalent of her damaging my property.
What can I do? I thought about telling her I’m consulting an attorney in hopes that it would scare her, but I would rather not actually go that far if she calls my bluff. I don’t have anywhere to store these couches and I just got them clean so I can list them for sale online. My view is she's telling me that I can't keep belongings in a house that I am legally renting, but it would be a more cut and dry situation if she was talking about ALL of my belongings and not just furniture.

