It happened in Evansville around a little before 5:00 Saturday.
The victim says he was picking up his daughter from Shyen Barksdale's house in the 900 block of Canal Street.
Police say that's when Barksdale allegedly starting yelling at him.
The victim says she got into the passenger side and stabbed him in the leg.
Barksdale faces domestic battery and battery causing serious bodily injury charges.
She has been released on bond.