I saw an episode of Law and Order?!

I saw an episode of Law and Order?

the other day where one of the female lawyers (the lady on Crossing Jordan) was on a car accident with Lenny in the car. What happened after this? Did she die? Was this a season ender and did they ever refer to it again?

Yes Jill Hennessey as Claire Kincaid died in that 1996 episode. In later seasons McCoy is still haunted by her death, as evidenced by his intense, legally questionable efforts to prosecute a drunk driver in "Under the Influence" (a year and a half later), and his indignation at being questioned about the circumstances of her death in "Sideshow." (over 2 and a half years later) Lennie, meanwhile, feels guilty that he was partially responsible, which leads him to re-enter Alcoholics Anonymous.