Will my sister be forced to leave her apartment when divorce is filed?

My sister is on the verge of meeting with lawyers to file for divorce. She is reluctant because the apartment lease and all the utilities are in her husband's name, and all their finances are split in such a way that he pays those bills entirely on his own. She is worried that because of this, he will have unquestionable rights to the area and she will be forced out and have to bring their two kids to live with a relative (in fact he has told her repeatedly that he can have her removed from the apartment any time he wants by police - whether or not this is actually true, he seems to think it is). Is there any way that things could work in her favor in such a way that she is allowed to stay in the apartment with the two children and he is the one who is forced to leave? If she can't afford the apartment on her own, will he be forced to continue paying?