By Nidal al-Mughrabi and Jeffrey Heller GAZA/JERUSALEM (Reuters) - An Israeli air strike killed a Palestinian mother and daughter in the Gaza Strip on Sunday and police, confronting a surge of stabbing attacks in Israel, said they foiled an attempt to drive a car bomb into Jerusalem. Palestinians disputed the police account, saying an electrical fire in the vehicle was mistaken for an explosion. Four Israelis and 23 Palestinians have died in 12 days of bloodshed fueled in part by Muslim anger over increasing Jewish access to the al-Aqsa mosque compound in Jerusalem.