my sister got pulled over years ago and never had a license. Today she still has an outstanding warrant and a fine of $1000.00.

When we handle these for our clients here in NJ, we typically call the Court, ask if there is a warrant, ask what the bail will be, and ask what needs to be done to get the matter back in front of the judge. We also determine what the maximum penalty will be, and whether the bail can simply be applied to the fine. Most fines are statutory in nature, and not subject to reduction by a judge. If there is any ability for the judge to exercise discretion, she should be prepared to establish her current financial position and explain why she needs the judge to reduce the fine. She should also be prepared to explain to the judge why she did not appear in Court originally. For additional information, she should talk directly to a lawyer admitted to practice law in TX. Good luck.

DISCLAIMER
I do not practice law in your State. This answer is provided solely for informational purposes only. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.

If she did the judge would most likely refer her to collections to work out a payment plan. I suggest that you get a lawyer's help and follow the sage advice of my colleague.