What is the name of your state (only U.S. law)? California. My mother set up a living trust to divest her estate 50/50 between me and my brother. The problem is my brother and sister in law keep coursing her to give them large amounts of money while she's still alive. My fear is, they'll be nothing left when she dies. Can I both sue him to stop getting money from her and later get my full 50%. My mom is 87 and easily persuaded to comply with things that not in her best interest. Thanks.