According to the You Were Mine Songfacts, in 1995, the Erwin sisters invited Natalie Maines to sing lead vocals on the demo of "You Were Mine." The sisters were so impressed with Maines' vocals that she went on to replace Laura Lynch, who was Dixie Chicks' lead singer at the time.
I can't find a reason to let go
Even though you've found a new love
And she's what your dreams are made of
I can find a reason to hang on