OK...everybody needs to stop freaking out and sit down and think of this logically. Divorces are situations of high emotion, and sometimes our minds get carried away.
Some questions/thoughts:
* Does your sister truly have reason to believe that her STB-ExH would kill her? has he threatened her? Physically injured her? Done damage to the house or her car? Exhibited any behavior that would truly make her feel afraid, as opposed to just getting caught up in the "we're getting a divorce" drama.
* If the phone was left by STB-ExH, could he have been in the house trying to get some of his stuff, or financial records or something of that sort? Not that it makes it right, but there's a big difference between "I'm going to kill you" and "I wanted the rest of my clothes and didn't want to see/deal with you".
* Has she removed anything she values from the house at this point, and placed it elswhere? If not, she should.
* Has she made copies of all their financial information, including credit card debt, savings accounts, retirement accounts, investments? If she hasn't, she should, so she has an idea of her total financial picture as of "X" date. She should place this information somewhere where he would not have access to it, even if that means getting a safety deposit box at the bank. Or she could leave it with a trusted friend or relative.
* Has she taken his name off any credit card accounts that she can? Before DH & I got married, I wanted to give him access to be able to use my credit card to buy some of the stuff we would need for our upcoming wedding. The CC company recommended making him an "authorized user"...meaning I "owned" the card, was giving him permission to use it, and could revoke that permission at any time without him having to agree to it. Different from a joint account insofar as with a joint account, I think you need both peoples' permission to make changes. If she has any cards like that, she should take him off as an authorized user. She should also try to get herself off any CC accounts if she can. I'd call every CC company I had a card with and see if i could get him or me off as many accounts as possible.
* She should then start a CC account in her name only.
* After she starts her own account, she should notify the credit reporting companies that there is a possibility that her estranged husband might try and start accounts in her or her child's name, and that he should not be allowed to do that?
* A restraining order? I don't put much stock in them. It's a piece of paper, not a protective force field. They sometimes serve to aggravate a tense situation into a violent situation.
* Her child's pre-school/daycare/caregoiver should be informed that under no circumstances is the child to leave their care with anyone other than her or someone she authorizes.
* Change the door locks and get a security system.
* Be very cognizant of her surroundings.
* She should speak to her attorney with regard to what she can do right now to make it so she is not responsible for any bills he incurs from this day forward, while waitinf for their divorce to be final. Perhaps a legal separation prior to the divorce, so that she can say "As of April 20th we were legally separated so the boat he bought on April 25th is not my financial or legal responsibility".
* Buy yourself and her a book called "The Gift of Fear" by Gaving deBecker. It is an excellent read...one that every woman should read and then reread every once in a while as a refresher.
Good luck...these situations are so difficult.