HOUSTON (KTRK) -- A woman is dead in a tragic car accident in northeast Houston, after she struck another vehicle head-on. And she was apparently chasing her own husband at the time.The accident happened at 4pm Thursday in the 13000 block of Wallisville Road. According to the Harris County Sheriff's Office, Nancy De Acosta was driving eastbound, while following her husband and his mistress in another car. Authorities say Nancy tried to force her husband's car off the road, but lost control and spun into the path of an oncoming SUV, slamming into it nearly head-on.Nancy De Acosta died at the scene. The driver of the SUV sustained severe injuries and was taken by Life Flight to Memorial Hermann Hospital. Nancy's husband Fredy Acosta and the woman with him were unhurt.