5 years ago my mother had $260,000 in cash. Now she has $90,000. She hasn't been on any trips or bought anything of significance. My sister and I are estranged. She and her husband are very manipulative and I believe they have helped mum make some financial decisions to their benefit. How can I prove this? My sister has Power of Attorney, or it may be Enduring Power of Attorney...what is the difference? They have convinced mum to put in her will that my brother in law gets $10,000. When my father was alive, 3 years ago, his will said that my sister and I would get everything divided equally. That has now changed. Mum's will now only refers to the house, car and gopher and not anything about cash. She is 86. I believe once mum goes that my sister and husband will take their time and I probably won't get everything I am entitled to. Should I put a caveat on the house or on the Will as soon as she passes - to make sure they do things properly? My sister is wealthy and I am not so I am in need and this is why I am so concerned.