Union improved to 5-8, 2-4 in the SWIAC. Linton-Stockton slipped to 1-14, 0-5 in league play.
"When you don't shoot the ball very well, you have to be aggressive and get to the foul line," said UHS coach Benji Boyd. "If you look at all of our games this year, we have been able to get to the line more than our opponents.
"We were very aggressive and took the ball to the basket hard."
The Lady Miners were 3 of 3 at the foul stripe while Union cashed in on 13 of 22 attempts from the 15-foot line.
"The one thing we wanted to do was keep them off the foul line," said Lady Miner coach Brad McKinney. "We did not want to bail them out and give them free points at the line.
"That proved to be the difference in the game."
Union guard Hannah Sullivan scored five of her game-high 16 points in the fourth quarter. She made 8 of 13 free throws, including three in the final eight minutes.
"Hannah was playing with a lot of motivation tonight," Boyd said of the former Linton-Stockton student-athlete. "You could tell this meant a lot to her playing against her old school.
"She carried us offensively for a long time. She really made a lot of good things happen."
The game was competitive throughout, as evidenced by the seven ties and nine lead changes. Union largest advantage was four -- 8-4 -- in the first quarter and the Lady Miners led by as many as two -- at 14-12.
Two free throws by Joie Gadberry gave Linton-Stockton a 21-20 edge in the first minute of the fourth quarter, which proved to be its last.
Miner guard Courtney Johnson tried to keep it interesting as she scored seven points in the fourth quarter. Her two-pointer cut the Union advantage to 24-23 and her baseline 3-ponter, set up by a pass from Brilee Parker, trimmed the UHS lead to 29-28 with 15 seconds remaining.
Both teams committed turnovers in the final minute. Union forced Gadberry into a held-ball situation, which gave the ball back to the Lady Bulldogs, but their 20th miscue returned the favor.
"This was a war," said Boyd. "And a war is not always pretty.
"Both teams know each other so well, being just five miles apart. Brad and I go way back.
"This game means so much to both teams. I will take an ugly win any day."
The Lady Miners had a couple of possessions in the final seconds, but they could not get a shot after Johnson's theft as the buzzer sounded.
"We went to Gadberry both times and I would do it again," said McKinney. "She is our senior and has been with me for four years.
"The first time they forced her into a jump ball, which is a call I didn't agree with. The second time, Benji knew we were going to Gadberry and jumped her with four players. We just couldn't get up a shot at the rim."
Johnson led the Lady Miners with nine points.
Union won the rebound battle 40-23, including 16 on the offensive end. Kolbi Reynolds had eight and Cali Hale grabbed seven boards.
There was no junior varsity game.
Union will be off until Thursday, Jan. 17 when they play at 6:30 p.m. at North Daviess.
Linton-Stockton will compete at Washington Catholic Saturday, starting with the junior-varsity game at 1 p.m.
UNION (29) -- Autumn Secrest 1-6 1-2 3, Kolbi Reynolds 2-8 4-7 8, Hannah Sullivan 4-11 8-13 16, Hallie Smith 1-4 0-0 2, Korissa Jobe 0-4 0-0 0, Cali Hale 0-3 0-0 0, Conner Kendall 0-1 0-0 0. Totals 8-37 13-22 29.
LINTON-STOCKTON (28) -- Joie Gadberry 1-9 2-2 4, Mercedes Shafford 1-3 0-0 2, Courtney Johnson 4-6 0-0 9, Brilee Parker 0-6 0-0 0, Carlie Booe 2-6 0-0 5, Avaree Dunn 3-11 1-1 8, Jacklyn Nash 0-0 0-0 0. Totals 11-39 3-3 28.
Union 4 8 8 9 -- 29
Linton-Stockton 2 9 8 9 -- 28
3-point shooting -- Union 0-3 (Kendall 0-1, Sullivan 0-1, Smith 0-1), Linton-Stockton 3-17 (Johnson 1-2, Booe 1-3, Dunn 1-6, Gadberry 0-1, Shafford 0-2, Parker 0-3). Fouls -- Union 13, Linton-Stockton 19. Fouled out -- None. Rebounds -- Union 40 (Reynolds 8, Hale 7), Linton-Stockton 23 (Shafford 8). Assists -- Union 4 (Jobe 2), Linton-Stockton 7 (Gadberry 4). Steals -- Union 6 (Sullivan 4), Linton-Stockton 5 (Johnson 3). Turnovers -- Union 20 (Smith 4), Linton-Stockton 14 (Gadberry 3, Parker 3). Blocks -- Union 1 (Reynolds), Linton-Stockton 5 (Gadberry 3). No junior varsity game (Union's request).