Complex sentence: Arrested for killing and stealing the possessions of several middle-aged women between the late 1990s and 2006, there are questions about the real number of her victims, estimated between 25 to more than 40.
Split into simpler sentences: Arrested for killing several middle-aged women and stealing possessions of them between the late 1990s and 2006. There are questions about the real number of her victims, estimated between 25 to more than 40.