Good morning. You absolutely should file suit against her and since she missed the 30 day deadline, she will be deemed in bad faith and you will be entitled to amount equal to the sum of $100, three times the portion of the deposit wrongfully withheld, and reasonable attorney's fees in a suit to recover the deposit. I have provided you the applicable statute below. You won't need an attorney to file this suit as small claims court is designed to be used without an attorney. Here's a guide to file this suit in small claims court: https://www.depts.ttu.edu/sls/forms/How-to-Sue-in-Small-Claims-Court.pdf
Sec. 92.109. LIABILITY OF LANDLORD. (a) A landlord who in bad faith retains a security deposit in violation of this subchapter is liable for an amount equal to the sum of $100, three times the portion of the deposit wrongfully withheld, and the tenant's reasonable attorney's fees in a suit to recover the deposit.
(b) A landlord who in bad faith does not provide a written description and itemized list of damages and charges in violation of this subchapter:
(1) forfeits the right to withhold any portion of the security deposit or to bring suit against the tenant for damages to the premises; and
(2) is liable for the tenant's reasonable attorney's fees in a suit to recover the deposit.
(c) In an action brought by a tenant under this subchapter, the landlord has the burden of proving that the retention of any portion of the security deposit was reasonable.
(d) A landlord who fails either to return a security deposit or to provide a written description and itemization of deductions on or before the 30th day after the date the tenant surrenders possession is presumed to have acted in bad faith."
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