Holt taught public school and worked as a dental assistant before becoming a Silsbee ISD school board trustee in 2014, where she's now board president. She and her husband of 33 years co-own an air-purification business and a cattle ranch. She won her Texas House seat in 2024 after Governor Abbott poured over $700,000 into her primary campaign against an incumbent who wouldn't back private-school vouchers.