My divorced brother took care of my mom for about a year after she was diagnosed with Alzheimer's Disease, but had lived with her in HER house for more than 12 yrs. When he couldn't take care of her anymore, my divorced-with-no-kids sister told us she couldn't care for her either. I'm the youngest, with an elderly husband and 2 girls in college and took her in. It's really an honor to care for my mom, whom I love, and I don't complain. My husband, youngest daughter and a hired lady help with her care. We take turns. Our life is certainly not what it used to be, and we make sacrifices. The problem is that I don't get much help from my siblings. My brother doesn't pay rent living in my mom's house, and my sister is so much in debt that sometimes sends a few dollars. My sister is the oldest and she has Power of Attorney rights in mom's will. She has reminded me that she will decide any matters about my mom's care when she needs to go to a home, because she is " the oldest". But because I'm the caregiver, and have gotten all the help my mom needs until now, do I automatically become my mom's legal guardian with future decisions? And if I do, does that make my sister's POA rights in the will null? I live in Texas. What are my rights? Thanks.