Roommate On Joint Lease Plans To Move Out And Stop Paying Rent. What Are My Legal Options? (florida)

My roommate (26F) and I (32F) are both named tenants on a residential lease in Florida. We were friends before moving in together, but our living situation has deteriorated, and she has announced that she's moving out December 1.

I'm trying to understand my legal rights and obligations before this happens, particularly because I cannot afford the apartment on my own.

Background:

We've had ongoing disagreements about cleanliness, her failure to clean up after her dog, and her repeatedly eating my groceries without permission. I'm a medical student living on student loans, so these expenses add up. I've confronted her several times, and although she initially apologized, the behavior continued.

After our most recent disagreement, she accused me of overstepping and announced she was moving out.

The lease situation:

• We are both named on the same lease.
• Our lease has substantial early-termination fees.
• Replacing a tenant requires approval from property management.
• Rent is paid in one transaction. She currently sends me her portion through Zelle, and I submit the full payment.
• She intends to move out December 1 and has stated that anything after that date is no longer her responsibility.

I explained that I have no objection to her leaving, but I believe she remains responsible for her portion of the rent until she's formally released from the lease or an approved replacement takes over.

I am willing to cooperate with finding a replacement roommate, provided management approves the arrangement.

She disagrees and believes that once she physically moves out, her financial responsibility ends.

Additional concerns:

She also owes me $160 from previous personal loans. I have text messages in which she agreed to repay me by November 14. Following our disagreement, she stated, "You'll get it when I get it."

Communication has deteriorated further. Recently, while I was away, she entered my private bedroom without permission. I have video footage documenting the entry. Given the ongoing dispute, I'm concerned about protecting my belongings and maintaining a record of incidents.

I'm not trying to prevent her from moving out or force her to continue living with me. My concern is that I'm financially unable to cover both portions of the rent while completing my medical school rotations.

My questions:

1. Under Florida law, if two tenants are on the same lease, can one tenant unilaterally move out and stop paying their portion without being formally released by the landlord?
2. If she stops paying, I understand the landlord may be able to pursue both of us for the full rent. Would I have grounds to recover her unpaid share through small claims court if I cover it to avoid eviction?
3. Would text messages documenting our arrangement to split rent, along with her previous Zelle payments, help establish her responsibility to reimburse me?
4. What should I do before December 1 to protect myself legally? Should I notify management in writing, request clarification of the lease obligations, or take other steps?
5. Regarding her unauthorized entry into my bedroom, does being a joint tenant give her the right to enter my private room without permission? Is there anything I should do beyond preserving the footage and documenting the incident?
6. Can I pursue the separate $160 debt through small claims court using the text messages acknowledging the loan and repayment date?

I'm hoping to resolve this without litigation, but I need to understand my options if she stops paying. I'm particularly concerned about protecting my rental history and avoiding an eviction or collections while still fulfilling my own lease obligations.

Any guidance specific to Florida landlord-tenant law would be appreciated.

UPDATE: Yesterday evening she entered my room without my permission (I am away for the weekend, and in anticipation of her antics, I purchased a camera). This was her response after I confronted her via message to have her explain why she entered my room without explicit permission. She claimed that I had her "belonging" I do not touch her things, and went out of my way to purchase things for her so she would stop using mine, not even to be paid back, just as a curtesy and a need for my things to stay mine.

She emailed me hours later with the following response. I do regret emailing her in pieces, I was just so taken aback because never have I called her out of her name or have approached her this angrily. I will no longer engage.

https://imgur.com/a/06u3Zau

Location: Florida