Woman pleads guilty to hit-and-run crash that killed 2 in Crest Hill, documents showCrest Hill police are looking for Joliet woman Mary Beth Mosqueda in a March hit-and-run crash that killed Laurie and Danny Cooper on Plainfield Road. Crest Hill police are looking for Joliet woman Mary Beth Mosqueda in a March hit-and-run crash that killed Laurie and Danny Cooper on Plainfield Road. Crest Hill police are looking for Joliet woman Mary Beth Mosqueda in a March hit-and-run crash that killed Laurie and Danny Cooper on Plainfield Road. Crest Hill police are looking for Joliet woman Mary Beth Mosqueda in a March hit-and-run crash that killed Laurie and Danny Cooper on Plainfield Road. CREST HILL, Ill. (WLS) -- A woman has pleaded guilty in a hit and run crash that killed two pedestrians.