Hello, Thank you for your questino
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Under normal circumstances this is not a database that is checked, unless the infraction is serious enough to land her on the No fly list.
If she was selected for additional screening, this may be something that would be checked. But this would be random
So your answer is, If she is going through security with normal conditions applying, she will be fine.
If they randomly select her for additional screening, they will see the bench warrant and she would possibly be denied boarding.
Please let me know if you have any further questions.