7th Heaven - Season 2 Episode 17
Nothing Endures But Change

Lucy gets an invitation to have pizza with two rebellious friends, then blames herself for the tragic car accident that claims her friends life, and her sister in the hospital. After Lucys friend is killed, the family rallies around her, noticing her unusually distant behavior. In addition, Mary does a favor for her ex-boyfriend Wilson and baby-sits his son Billy so he can go to his prom. Also, Simon gets his own room while Matt moves into the attic.