After the Irish forced a shot-clock violation, McBride missed a forced three and Auriemma called timeout with 57 seconds to play. The Irish regained possession but Kaila Turner missed a shot and Faris was fouled with 28.6 to play.
Faris missed the foul shot, but Notre Dame could not convert and Stewart when to the line and missed again.
Finally with 13.9 seconds to play, Achonwa made two free throws to cut the lead to 70-68. Morgan Tuck was then fouled and made one of two to increase the lead to 71-68 with 13.2 to play.
Then McBride forced the second overtime with a three with eight seconds remaining. It was Notre Dame's only three-pointer of the game in 12 attempts.
"Every chance we had to put the game away we let slip away," Auriemma said. "I never thought the kid [McBride] would just walk up to the three-point line and we'd just watch her shoot it."
The Huskies had a 64-63 lead with 48.5 seconds to play in regulation after a basket by Faris.
UConn looked like it had the game won when Natalie Achonwa turned it over with 37 seconds left. But Dolson was inexplicably called for an offensive foul, her fifth of the game.
Worse yet, Hartley then also fouled out, sending Diggins to the line for two shots.
She tied the game at 64-64 with 27.2 to play. But Caroline Doty turned the ball over when Diggins tied her up and the Irish had the final shot. But McBride missed with three seconds to play.
Now the Huskies need to regroup quickly if they want to win the conference tournament.
"I don't know," Faris said. "The 35 turnovers were incredibly unacceptable."