Tenant hasn't paid late rent fee

[Devin E.]

Good morning all, I have a tenant who wrote a bad check and was late on the rent. She was suppose to pay this amount on the first of this month. On the first I called to check with her bc she didn't make the payment. She asked for an extension until the 15th. We'll the 15th has now came and passed and still no payment. What should I do? She owes about $183.00 Thank you