45 days would be a 2nd offense here in TN. A 1st offense calls for 48 hours (2 days) usually served from Friday night until Sunday. I don’t know Texas law but maybe they have an enhancement based on the BAC even on a 1st offense?
I think the dash cam video and jail video may have been the basis for the harsher sentence. She is lucky this didn’t happen in Williamson county.