UTA erased a 2-0 deficit in the match, but a 15-12 5th set gave the match to Texas State.
UTA extended its home win streak to five straight matches and 10 out of the last 11.
UTA out-hit, out-dug and out-blocked Georgia Southern in the four-set win.
UTA will square off against Arkansas State and Little Rock in a pair of matches this weekend.
Cassidy Wheeler is ninth on UTA's career assists leaderboard with 1,569 through three seasons.