The sheriff’s oath states “preserve, protect, and defend the Constitution and laws of the United States and of this State”
The sheriff is refusing to perform the duty imposed on them by law and violating her oath, which are grounds for removal.
REMOVAL OF COUNTY OFFICERS FROM OFFICE
Sec. 87.011 DEFINITIONS (3) “Official misconduct” means intentional, unlawful behavior relating to official duties by an officer entrusted with the administration of justice or the execution of the law. The term includes an intentional or corrupt failure, refusal, or neglect of an officer to perform a duty imposed on the officer by law.
Sec. 87.012. OFFICERS SUBJECT TO REMOVAL. The district judge may, under this subchapter, remove from office (9) a sheriff
Sec. 87.013. GENERAL GROUNDS FOR REMOVAL. (a) An officer may be removed for (2) official misconduct
Sec. 87.015. PETITION FOR REMOVAL. (a) A proceeding for the removal of an officer is begun by filing a written petition for removal in a district court of the county in which the officer resides. (c) The petition must be addressed to the district judge of the court in which it is filed. The petition must set forth the grounds alleged for the removal of the officer in plain and intelligible language and must cite the time and place of the occurrence of each act alleged as a ground for removal with as much certainty as the nature of the case permits.
etc
REMOVAL OF COUNTY OFFICERS FROM OFFICE http://www.statutes.legis.state.tx.us/Docs/LG/htm/LG.87.htm
Good find.